Appendix A Standard Operating Procedures

Appendix A

Standard Operating Procedures

StandardOperating

Procedure NumberStandard Operating Procedure Title

RevisionNumber

RevisionDate

AnnualReview

Date

PWT-COS-302 XRF Sample Preparation 1 Nov-15 NA

PWT-COS-303 XRF Sample Analysis 1 Dec-15 NA

PWT-ENSE-402 Spatial Data Submittals 4 Oct-16 Oct-16

PWT-ENSE-406 Sample Handling 2 Mar-12 Oct-16

PWT-ENSE-413 Utility Clearance 2 Oct-16 Oct-16

PWT-ENSE-423 Investigation Derived Waste Management 2 Oct-16 Oct-16

PWT-ENSE-424 Personnel and Equipment Decontamination 3 Oct-16 Oct-16

PWT-COS-427Surface and Shallow Sub-Surface Soil Samplingfor Inorganics (Project Specific Procedure)

4 Mar-17 NA

PWT-ENSE-430 Indoor and Attic Dust Sampling 1 Dec-16 NA

SurveyingStatement of Work

Request for Information for Surveying ServicesColorado Smelter Site – Operable Unit 1Pueblo, Colorado

0 Jul-15 NA

Colorado Smelter Standard Operating Procedure

XRF Sample Preparation Procedure No. PWT-COS-302Revision 1

Date effective: 11/10/2015APPROVED: /s Page ii of ii

PWT Project Manager, Date

REVISION LOG

Revision Number Description Date

0 Original SOP September 2015

1 Editorial Changes November 2015

ANNUAL REVIEW LOG

Revision Reviewed Description Date

XRF Sample PreparationProcedure No. PWT-COS-302

Revision 1Page 1 of 5

1.0 PURPOSE AND SCOPE

This Standard Operating Procedure (SOP) provides technical guidance and methods that will be used toprepare soil samples for chemical analysis during environmental investigations performed during theRemedial Investigation (RI) in the Community Properties Study Area (CPSA) of the Colorado SmelterSite. This SOP serves as a supplement to site-specific Health and Safety plans and the site-specific CPSARI Quality Assurance Project Plan (QAPP). This SOP may be used in conjunction with other SOPs.

This SOP is intended to be used to prepare all RI soil samples for analysis by x-ray fluorescence (XRF).Subsamples of selected prepared samples will also be taken for analysis by fixed-laboratory methods formetals and bioavailability of metals. This SOP follows the standard template for SOPs produced byPacific Western Technologies, Ltd. (PWT) for environmental support operations.

2.0 REQUIREMENTS

2.1 Key Words

X-ray fluorescence (XRF), sample preparation.

2.2 Quality Assurance / Quality Control (QA/QC)

Follow all QA/QC requirements as identified in the approved Quality Assurance Project Plan (QAPP),and associated SOPs.

2.3 Health and Safety

Follow health and safety requirements identified in the Site-Specific Health and Safety Plan (HASP), JobSafety Analyses (JSAs), any applicable task health and safety plans prepared by PWT subcontractors, andthe associated Activity Hazard Analyses (AHAs).

2.3 Personnel Qualifications

Personnel preparing samples for the RI will have knowledge and experience in the subject matter and thegoals of the RI. Personnel performing sample preparation activities are required to have completed theinitial 24-hour OSHA classroom training that meets the Department of Labor requirements 29 CFR1910.120(e), and work under the supervision of a 40-hour OSHA trained person. Supervisors of samplepreparation activities are required to have completed the initial 40-hour OSHA classroom training thatmeets the Department of Labor requirements 29 CFR 1910.120(e), and must maintain a current trainingstatus by completing the appropriate annual 8-hour OSHA refresher courses. Personnel must also have readand signed the appropriate HASP(s). Prior to engaging in sample preparation activities, personnel must havea complete understanding of the procedures described within this SOP and, if necessary, will be givenspecific training regarding these procedures by other personnel experienced in the methods described withinthis SOP.

2.4 Definitions

1. “Disaggregation” is the process of breaking clumps of soil into free-flowing individual soilparticles. It does not include the fracturing, crushing, pulverization, or comminution of individualsoil particles. Clay particles are microscopic. Breaking up clay clumps or clods into the actualdust-sized clay particles usually requires some mechanization. This is discussed in detail in thesection on disaggregation. Particles such as very small bits of solid stone or minerals, such assand, are not crushed by the disaggregation techniques listed in this SOP.

3.0 MATERIALS AND EQUIPMENT

In order to prepare soil samples for XRF analysis and shipment for additional analysis by other methodsthe following equipment may be needed:



Plastic storage bags (thick-walled, not to be used for analysis) Polypropylene bags of 1.2 mil thickness, (various sizes as necessary) Clear adhesive tape Sample labels Powder-free gloves Rolling pins Rubber mallets 10-mesh sieves 60-mesh sieves Sieve catch pans and lids Sieve shaker Drying ovens Drying trays sized for the drying ovens Aluminum foil Timers Analytical balances Calibration check weights Decontamination supplies and equipment (e.g., wash/rinse tubs, brushes, Alconox (or

equivalent), plastic sheeting, paper towels, sponges, baby wipes, garden-type water sprayers,potable water, and deionized or distilled water, clean silica sand.

4.0 PROCEDURES

All samples will be initially weighed, then inspected. The samples will be oven-dried, and weighedagain. Samples will be disaggregated before, during, and after drying. The dried samples will then besieved and bagged for XRF analysis. The sections below describe these procedures in detail.

4.1 Initial Sample Weight

Tare the balance with an empty bag of the same type used to collect the sample. Measure and record theinitial weight of the sample (which is expected to be between approximately 100 grams and 3 poundsdepending on the type of sample collected). Balance calibration checks should be performed weeklyfollowing the procedures described in Section 4.7, “Balance Calibration Checks.”

4.2 Sample Inspection

Each sample should be inspected for the presence of large rocks or other debris such as plastics, plantmatter, or wood that should not be part of the soil sample. These materials should be removed from thesample prior to beginning sample processing, and retained in a separate bag for storage with the sample.

4.3 Drying

Each sample should be inspected for soil moisture prior to further processing. If any of the conditionsnoted below are observed, air drying or drying in an oven should be performed:

Soil particles do not move relatively freely; The soil is visibly moist, as determined through observation of a slight color variation

between the exposed surface of the sample and the rest of the sample.

If drying is necessary, perform the following steps to dry each sample:

1. Prior to drying, disaggregate the soil by hand (wear powder-free gloves) as much as possible.Disaggregation of clayey soils is easier when the soil is slightly damp, and may becomedifficult after the soil has dried, especially with oven drying.



2. Set the drying oven to a temperature of 100°C or lower.

3. Line a drying pan with aluminum foil, and spread the soils evenly over the foil. If the soillayer is too thick for air to reach the center of the sample, split the soil into two or more pansas needed.

4. Place the drying pan(s) in the oven for 5-20 minutes.

5. Remove the pan to inspect the soil, and disaggregate clumps by hand (gloved) whennecessary and possible.

6. Repeat in 5- to 20- minute cycles as necessary.

7. After satisfactory dryness is achieved, as indicated by no color variation between the exposedsurface of the sample and the rest of the sample weigh the dried soil on the aluminum foil andrecord the weight of the dried sample and aluminum foil in the appropriate column of thesample preparation form. Drying the samples is critical because even slightly damp soil willclog the screen openings rather than flowing through them.

8. Transfer the dried sample into the 10-mesh sieve of a sieve stack, then weigh the aluminumfoil by itself and record the weight of the aluminum foil in the appropriate column of thesample preparation form.

9. Calculate the total weight of the dried sample by subtracting the recorded weight of thealuminum foil from the recorded weight of the dried sample and aluminum foil together, andthen record the total weight of the dried sample in the appropriate column of the samplepreparation form.

4.4 Disaggregation

Disaggregation will be conducted before, during, and after drying, if drying was necessary. Duringdisaggregation, continue to remove any obvious stones larger than 2 mm, and retain these stones in aseparate bag for storage with the sample (the same bag mentioned in Section 4.2 should be used).Disaggregation may be accomplished by several methods, and some methods may work better for certainsoil types for others:

Hand-disaggregation: This can be the fastest and easiest way to disaggregate small amounts of soft,semi-cohesive materials such as sandy and loamy soils. Repetitive motion injury and unseen sharpobjects may be concerns during hand disaggregation, so care should be used.

1. Hands must be gloved (powder-free) whenever handling soil directly.

2. Hand disaggregation can also be accomplished by massaging through the plastic bagcontaining the soil.

3. If there is a large amount of soil being processed in the bag, empty the bag contents into a panfor inspection to make sure no agglomerates were missed.

Rolling pin: This option works well for soft soils able to be disaggregated by hand, but can be lesstiring. Some soils may be rolled while still in the original plastic bag, but samples may still need to beemptied into a pan for inspection to make sure disaggregation was complete. If rolled in a pan, placea clean piece of thin plastic or butcher paper between the rolling pin and the sample to preventcontamination. The butcher paper may not be reused. Make sure the pan is either very shallow so thatthe handles are unobstructed, or is wide enough to easily accommodate the entire length of the rollingpin in motion (including handles and hands). Additional considerations:

1. If larger stones, sticks, or anything sharp is present, remove them from the bag so they cannotinterfere with the rolling pin or punch a hole in the bag (anything larger than 2 mm willeventually be removed during sieving).



2. This technique might not be effective for hard clay agglomerates which could be ejected fromthe work area from the pressure from the rolling pin.

3. If a rolling pin is used on soil that is outside of an enclosed bag, care must be used to avoid“popping” particles out of the sample. Lay sheets of butcher’s paper or similar above andbelow the soil layer to be rolled. Fold, tuck or tape the edges so the material is completelyenclosed and contained.

Rubber mallet: Used to smash hard clods while soil is in the original heavy plastic bag or anotherenclosure, such as the butchers’ paper described above.

Note that all techniques that disaggregate soil while it is in a plastic bag will create crinkles or dimples inthe plastic. XRF readings through such a bag will present interference for the X-rays and result in poordata precision. Sample processing should be done in a heavy plastic bag to avoid tearing of the bag.However, even undamaged, thick-walled plastic bags should not be used for XRF analysis. Soil to beread by XRF must be in an undamaged thin-walled plastic bag that has been confirmed as free ofinterference (as described in the XRF Analysis SOP).

4.5 Sieving

Sieving will be conducted on all samples following disaggregation. Two sieve sizes will be used. Thefirst is a coarse 10-mesh sieve which excludes material larger than 2 millimeters (mm) in diameter. Thisfraction will not be analyzed by XRF. The second is a 60-mesh sieve which excludes material larger thanapproximately 250 micrometers (µm) in diameter, which also will not be analyzed by XRF. Theremaining material (smaller than 250-µm in diameter) is the fraction targeted for chemical analysis andproject decision making. However, all three fractions will be weighed and stored.

1. Weigh the sample on the aluminum foil and record the weight on the sample preparation log.

2. Stack the sieves by placing the pan on the bottom, a 60-mesh sieve above the pan, and a 10-mesh sieve above the 60-mesh sieve.

3. Transfer the dried sample to the 10-mesh sieve, and fit a lid on the top of the 10-mesh sieve.

4. Weigh the aluminum foil (now without the soil) and record the foil weight. Calculate thetotal weight of soil and record on the sample preparation log.

5. Place one sieve stack on the sieve shaker, and set the sieve shaker to a 5-minute cycle. If theshaker is large enough, two set of sieves may be stacked together for simultaneous sieving.

6. Remove the sieves from the shaker.

7. Remove the bottom pan and pour the contents into the plastic bag to be used for XRF analysis(an appropriately sized polypropylene bag of 1.2 mil thickness, labeled with the sample IDand “fraction < 60-mesh”). Take care to ensure that the sample is transferred completelyfrom the sieve to the storage bag.

8. Transfer the material retained by the 10-mesh sieve into the plastic bag containing materialpicked out of the sample by hand in previous steps (labeled with the sample ID and “fraction> 10-mesh”). Weigh and record the mass of this bag (using an empty bag of the same typefor a tare weight).

9. Transfer the material retained by the 60-mesh sieve into a plastic bag (labeled with thesample ID and “10-mesh > fraction > 60-mesh”. Weigh and record the mass of this bag(using an empty bag of the same type for a tare weight).

10. Weigh and record the mass of material passed through the 60-mesh sieve and into the bottompan (using an empty bag of the same type for a tare weight).

11. Place the first two bags into a sample bag labeled with the sample ID and “overbag” forstorage. The overbag storage bag will now contain any oversized material picked out of the



sample, as well as the two fractions of sample that did not pass through the 10-mesh and 60-mesh sieves.

12. Decontaminate the sieves before reusing them, following Section 4.7.

4.6 Final Sample Preparation

The soil fraction that passed through the 60-mesh sieve should now be in a polypropylene bag of 1.2 milthickness of appropriate size for the amount of sample. The bag should be large enough for the soil insideto lay flat in a layer from 1 to 3 inches thick. The bag has a flap with a resealable sticky strip; however,the sticky strip will not prevent leakage from the bag. Clear adhesive tape (or equivalent) should be usedto seal both sides of the flap. The tape should not be so wide that it interferes with the XRF readings.Tape may be necessary on the corners of bags to prevent pinhole leaks for certain bags. The bag shouldbe placed in the corresponding overbag for storage before and after analysis.

The sample should now be transferred to the XRF analysis area.

4.7 Balance Calibration

On a weekly basis (or more frequently), the balances used for the project should be calibrated using 1-kilogram, 50-gram, or 1-gram calibration weights, as appropriate for the sample masses being measured.The following should be recorded:

1. Date.2. Time.3. Mass of the calibration weight.4. Measured mass.

If the measured mass deviates from the measured mass by more than 1 percent, procedures described inthe user manual for the balance should be followed to correct the deviation. If necessary, the balancemanufacturer should be consulted. Any samples weighed since the last passing calibration should be re-weighed following successful corrective action.

4.7 Sieve Decontamination

The sieves should be decontaminated between each sample by brushing with appropriate gauge brushes asrecommended by the manufacturer. After brushing, each sieve component should be wiped with a damppaper towel to remove any remaining dust. Each sieve should be examined following decontaminationfor damage; damaged sieves should be taken out of service and replaced.

5.0 DOCUMENTATION

Sample preparation procedures for each sample will be documented on the Sample Preparation Log. ASample Preparation Log will be generated in Scribe with the sample IDs pre-populated. An example ofhow this documentation will look is included in Attachment A. Balance calibration checks will bedocumented on the Balance Calibration Log (Attachment B). Similar forms that capture the sameinformation are acceptable.

ATTACHMENT A

Sample Preparation Log

EXAMPLE SAMPLE PREPARATION LOG

Property ID: _____ _ Sample Preparation Log Sta ff Initials: -----

Post drying mass (g) Mass of Fraction

Sample# Pre Drying Mass Sample Only Mass of Fraction between 10 and Mass of fraction

(g) Sample and Foil Foil On ly (calc) > 10 mesh 60 mesh < 60 mesh

S0269-AP-0001-01

S0269-AP-0106-01

S0269-AP-0612-01

S0269-AP-1218-01

S0269-BY-0001-01

S0269-B Y-0106-01

S0269-BY-0106-02

S0269-B Y-0106-03

S0269-BY-0612-01

S0269-BY-1218-01

S0269-DZ-0001-01

S0269-SY-0002-01

S0269-SY-0206-01

S0269-SY-0612-01

S0269-SY-1218-01

BALANCE CALIBRATION LOG

ATTACHMENT B

Balance Calibration Log

BALANCE CALIBRATION LOG

Balance Serial Number:

Date Time

CalibrationWeightUsed

MeasuredMass Accuracy

Correctiveaction

necessary(yes/no)? Initials Comments


XRF Sample Analysis Procedure No. PWT-COS-303Revision 1

Date effective: 12/10/2015APPROVED: /s Page i of ii


TABLE OF CONTENTS

Section Page No.TABLE OF CONTENTS ........................................................................................................................ i

List of Attachments .................................................................................................................................. i

1.0 PURPOSE AND SCOPE ............................................................................................................. 1

2.0 REQUIREMENTS....................................................................................................................... 1

2.1 Key Words............................................................................................................................... 1

2.2 Quality Assurance / Quality Control (QA/QC) ......................................................................... 1

2.3 Health and Safety..................................................................................................................... 1

2.3 Personnel Qualifications........................................................................................................... 1

2.4 Definitions ............................................................................................................................... 1

3.0 MATERIALS AND EQUIPMENT.............................................................................................. 2

4.0 PROCEDURES ........................................................................................................................... 2

4.1 Sample Inspection.................................................................................................................... 2

4.2 XRF Measurement for Full Samples......................................................................................... 3

4.3 Subsampling and XRF Analysis for Subsamples ...................................................................... 4

4.4 Routine Quality Control Procedures ......................................................................................... 4

4.5 Troubleshooting and Corrective Actions................................................................................... 5

5.0 DOCUMENTATION................................................................................................................... 8

List of Attachments

Attachment A Sample Analysis Log

Attachment B Subsample Preparation Log

Attachment C Nonconformance Log


XRF Sample Analysis Procedure No. PWT-COS-303Revision 1

Date effective: 12/10/2015APPROVED: /s Page ii of ii


REVISION LOG



1 Editorial corrections December 2015

ANNUAL REVIEW LOG


XRF Sample AnalysisProcedure No. PWT-COS-303



This Standard Operating Procedure (SOP) provides technical guidance and methods that will be used forX-ray fluorescence (XRF) sample analysis during environmental investigations performed during theRemedial Investigation (RI) in the Community Properties Study Area (CPSA) of the Colorado SmelterSite. This SOP serves as a supplement to site-specific Health and Safety plans and the site-specific CPSARI Quality Assurance Project Plan (QAPP). This SOP may be used in conjunction with other SOPs.

This SOP is intended to be used to analyze all soil samples collected during the Colorado Smelter RI byXRF. This SOP follows the standard template for SOPs produced by Pacific Western Technologies, Ltd.(PWT) for environmental support operations.

2.0 REQUIREMENTS

2.1 Key Words

X-ray fluorescence (XRF), sample analysis.


Follow all QA/QC requirements as identified in the approved QAPP, and associated SOPs.




Personnel analyzing samples for the RI will have knowledge and experience in the subject matter and thegoals of the RI. Personnel performing soil sample analysis activities are required to have completed theinitial 24-hour OSHA classroom training that meets the Department of Labor requirements 29 CFR1910.120(e), and work under the supervision of a 40-hour OSHA trained person. Supervisors of soil sampleanalysis activities are required to have completed the initial 40-hour OSHA classroom training that meetsthe Department of Labor requirements 29 CFR 1910.120(e), and must maintain a current training status bycompleting the appropriate annual 8-hour OSHA refresher courses. Personnel must also have read andsigned the appropriate HASP(s). Prior to engaging in soil sample analysis activities, personnel must have acomplete understanding of the procedures described within this SOP and, if necessary, will be given specifictraining regarding these procedures by other personnel experienced in the methods described within thisSOP.

Training regarding x-ray safety is required in accordance with the HASP. Informal training on theprocedures to be used will be performed during the RI by qualified project team staff.

2.4 Definitions

1. “Quality Control” (QC) refers to specific technical checks that allow a determination of whetherthe associated batch of products or services meets the specifications defined for that product orservice. Analyzing samples of known composition (e.g., blanks and LCSs) is an important QCcheck on instrument performance. If an XRF performs well (i.e., gives results close to expected)on QC samples, then the assumption of equally good performance on unknown samples of asimilar matrix may be justified.

2. “QC control chart” refers to a graphical representation of the acceptable limits for concentrationresults from an SRM of known concentration. The purpose of a control chart is monitoring theperformance of an XRF before and after batches of samples are analyzed. Markings on a number



line (the y-axis) display the range of acceptable results. When an LCS is read, the result is plottedto show where it falls in relation to the acceptable limits which are derived from the mean andstandard deviation of evaluation data. Results that fall outside of the limits indicate there is ananalytical problem that needs to be resolved before sample results can be finalized and reported.

3. “XRF sample batch” refers to a group of samples bounded by LCS results. A sample batch mustbe bounded by in-control LCS results before the sample results for that batch can be reported. AnLCS that is out-of-control at the start of a batch means that the batch cannot be analyzed until theperformance problem has been resolved. An LCS that that is out-of-control at the end of a batchmeans that the batch cannot be reported until the problem is resolved, and the samples rerun.

4. “Standard Reference Material” (SRM) refers to a commercially prepared soil certified to haveknown (a mean plus/minus variability) concentrations for various elements or compounds.

5. “Lower confidence limit” (LCL) refers to a statistically calculated value that provides a specificlevel of confidence that the true mean for a sample with multiple measurements is above thisvalue. If a 95% lower confidence limit is calculated, there is a 5% chance that the true meanactually lies below the LCL.

6. “Upper confidence limit” (UCL) refers to a statistically calculated value that provides a specificlevel of confidence that the true mean for a sample with multiple measurements is below thisvalue. If a 95% upper confidence limit is calculated, there is a 5% chance that the true meanactually lies above the LCL.


In order to analyze soil samples for XRF analysis and shipment for analysis by other methods thefollowing equipment may be needed:

Portable XRF analyzer Polypropylene bags of 1.2 mil thickness, (various sizes as necessary) Polypropylene bags of 1.2 mil thickness (for subsamples), approximately 2 inches by 2 inches Clear adhesive tape Sample labels Powder-free gloves Scoop or spatula SRMs for LCS checks.

4.0 PROCEDURES

Samples will be analyzed in a multi-step process. All samples will be initially inspected, then analyzed.Routine quality control procedures are to be conducted at the start of the day and periodically throughoutthe day. Corrective action may be required based on quality control results.

4.1 Sample Inspection

Each sample should be inspected to confirm the following:

1. The sample is in the correct type of plastic bag (polypropylene of 1.2 mil thickness). If thesample is double-bagged, remove the outer bag for analysis.

2. There are no crinkles or dimples in the bag walls that could interfere with the measurement.

3. The appearance of the soil particles should be identical on both sides of the bag. If one sideappears different in color in or particle size, the following steps should be done to homogenizethe soil in the bag:

a. First, check that the bag is sealed properly. If it appears the bag may leak, use scotchtape to close the bag completely at the seam and in the corners as necessary.



b. Suspend the bag by 2 corners and rotate the bag in the air through 360 degrees of rotation5 times.

4. Repeat step 3 until the soil appears homogenous on both sides of the bag.

4.2 XRF Measurement for Full Samples

The following steps are used to analyze samples:

1. Start up the instrument using routine operating and QC procedures (see Section 4.4).

2. Lay the bag flat on the sample stand to take XRF readings. Make sure any taped areas of thesample bag are not in the area to be scanned by the XRF. Use the camera to check that no gapsare present in the portion of the sample to be scanned.

3. Take two readings on the first side of the bag (moving the sample between the two readings), andrecord each target element result and its instrument error in a spreadsheet. A minimum 30 secondcount time shall be used to perform each reading.

4. Flip the bag over.

5. Take two additional readings on the second side of the bag (moving the sample between the tworeadings). Again, record each target element result and its instrument error into the spreadsheet.

6. Check that the statistical confidence goals for the sample have been met:

a. If the mean is lower than the decision limit for the metal being examined, compare the95% upper confidence limit (95% UCL) of the mean to the decision limit. If the UCL isalso below the decision limit, then no further analysis of the bag is necessary.

b. If the mean is greater than the decision limit, compare the 95% lower confidence limit(95% LCL) of the mean to the decision limit. If the LCL is also above the decision limit,then no further analysis of the bag is necessary.

7. If further analysis is necessary as noted in steps 7a or 7b above, continue making additionalmeasurements in pairs (one on each side of the bag) until one of the following occurs:

a. The mean and UCL are both below the decision limit, or the mean and LCL are bothabove the decision limit.

b. 10 measurements have been made, and the mean and UCL (or LCL) are still on oppositesides of the decision limit, but the RSD for the 10 measurements is below 25%. If thisoccurs, the data may be used without further reanalysis.

c. 10 measurements have been made, and the mean and UCL (or LCL) are still on oppositesides of the decision limit, and the RSD for the 10 measurements is above 25%. If thisoccurs, remix the bag following Section 4.1.3, and reanalyze the sample followingSection 4.2. See step 10 below for how to handle the results from the initial analysis.

8. If a second 10 measurements still does not provide a clear decision, the following steps may betaken to try to resolve the problem:

a. Check whether the readings from the two sides of the bag demonstrate a consistent biasrelative to each other. If a consistent bias is demonstrated and it appears that this biasmay be introducing artificial variability, remix the bag by rotating it as described inSection 4.1.3. See step 10 below for how to handle the results from the initial analysis.

b. If another sample from the same DU but a different depth interval for the same analyteprovides a clear decision that that analyte is above the decision limit, then additionalanalysis is not required.

c. If another sample from the same DU and the same depth interval (or a deeper interval) fora different target analyte provides a clear decision that that analyte is above the decisionlimit, then additional analysis is not required.



9. NOTE: If remixing of the bag is required to obtain data that meet the decision requirements asnoted above, do not use the previous data.

4.3 Subsampling and XRF Analysis for Subsamples

Certain samples will be selected for comparability analysis by inductively-coupled plasma (ICP),geospeciation, and bioaccessiblity. These decisions will be made by the project team. In some cases, theproject team may determine that a sample is a critical one, and a backup bag may be prepared for eachspecified comparability analysis. Each subsample should be prepared following the XRF samplepreparation SOP, and analyzed following the procedures below:

1. Homogenize the soil in the bag, mixing thoroughly by hand. With the sample still in the storagebags (likely an analysis bag inside a thicker-walled plastic bag).

2. Reopen the outer sample bag, and open the inner sample bag by slitting the scotch tape along bothsides. Open the flap.

3. Reach into the bag with a scoopula or similar implement.

4. Scoop out approximately half the mass of soil needed from a random location in the sample bag.For ICP/bioassay samples, this will be half of the target weight of 1 to 1.5 grams.

5. Place the soil into a small (2-inch by 2-inch) 1.2 mil thick polypropylene bag.

6. Carefully turn the large bag over, and scoop out the other half of the mass required into thesubsample bag.

7. Check that sufficient soil is in the subsample bag to allow the XRF to shoot through a layer ofsoil at least 3 mm thick).

8. Weigh the bag, using an empty bag of the same type for a tare weight.

9. Analyze the small bag 4 times (twice on each side).

10. Check that the average of the readings on the subsample bag lies within the 2-sided 95%confidence interval for the large bag, or that the difference between the average of the subsamplebag readings and average of the large bag readings is less than 10% of the large bag readings.

a. If these conditions are not met, empty the small bag back into the large bag, and repeatsteps 2 through 9. If the target cannot be met after 4 consecutive attempts, contact theproject chemist for instructions on how to proceed.

b. If these conditions are met, seal the flap of the small bag and tape to avoid leakage.Label the bag to allow association of the subsample bag and the measured concentrationwith the parent sample bag.

4.4 Routine Quality Control Procedures

The following quality control procedures will be performed during all sample analysis by XRF:

1. Initial control charting. Control charting will be conducted for each instrument, analyte, SRM,and scan time prior to the start of sample analysis. Follow the steps below to generate the initialcontrol charts for the target analytes:

a. Over a period of about 7 working days, generate at least 25 readings, and up to 50readings, on each LCS, making 4 readings over the course of an 8-9 hour day, with aninstrument restart between the third and fourth readings. If possible, use several differentoperators to collect data during this period.

b. Prepare a control chart for each instrument, analyte, SRM, and scan time that will be usedduring the project. The chart should show a line for the mean value for the analyte, andlines at values for the mean plus and minus 2 standard deviations, and the mean plus andminus three standard deviations.



c. Use the control chart to plot visually each LCS analyzed during the project. Assess theresults following Section 4.4.4, below, and take corrective actions as necessary.

d. Once an additional 25 to 50 LCS readings have been made, the new data may beincorporated into the control chart, or a new control chart generated. To assess ongoinginstrument performance, statistical tests such as t-tests and F-tests may be conductedprior to incorporating the new data or substituting new data on the control chart;otherwise instrument drift may occur over the course of the project.

e. It is important to note that the mean concentration measured by the XRF may vary fromthe concentration reported by the supplier of the SRM, even when uncertainty fromprecision is taken into account. This may occur because of bias in the XRF instrumentrelative to the techniques used by the manufacturer to establish the concentration of theSRM. This does not constitute a failure of the method; comparisons of XRF data withICP data will be used to assess possible instrument bias, and if necessary, the XRF datamay be adjusted for bias if this is supported by the data. Such adjustment is beyond thescope of this SOP, but any such processes will be documented in the remedialinvestigation report.

2. Interference checks. Each lot number of plastic bags should be checked for interference. RunLCS samples at both high and low concentrations with 7 to 10 readings. Conduct a t-test and anF-test to confirm that the bags do not interfere significantly with the results. Once a particular lotnumber has been cleared as free from interference, no other bags need to be checked from thatlot.

3. Blank analysis. An instrument blank consists of silicon dioxide or sand in the same type ofanalysis bag as the samples. An instrument blank should be run at the start of every batch:

a. Analyze the blank in the same manner as the samples (follow steps 4.2.2 through 4.2.10).

b. If arsenic or lead is detected in the blank, the instrument should be considered to be out ofcontrol, and corrective actions identified in Section 4.5 should be taken.

4. LCS analysis. Before and after each batch of samples, LCS samples should be run to confirmthat the instrument remains in control. The size of a batch is at the discretion of the analyst, butan LCS set should be run at least every 10 sample bags; if more replicate analysis is beingperformed for many samples, it may be better to run LCS sets more frequently. Early in theproject it may be advisable to run the LCS sets at a higher frequency until it is established that theprocess is running smoothly.

At least two and preferably three LCS samples should be run, with low, medium, and highconcentrations of the target analytes. If the results for a specific instrument, target analyte, SRM,and scan time are outside of 2 standard deviations, the instrument may be out of control andcorrective action is required - follow the actions identified in Section 4.5.2 or Section 4.5.3.

5. Instrument duplicate analysis. An instrument duplicate should be run once every day at startupsamples to build an instrument history. To run an instrument duplicate, run the LCS sample twiceconsecutively to assess the instrument drift. Do not record the result for the instrument duplicateon the control chart. Instrument duplicates will be used for troubleshooting to assess whetherelectronic problems are occurring in the instrument. No specific corrective actions are requiredon the basis of the instrument duplicate; when electronic problems are suspected, anotherinstrument duplicate may be analyzed and compared to previous instrument duplicate results as adiagnostic tool.

4.5 Troubleshooting and Corrective Actions

There are several possible causes of difficulties with XRF instruments:



1. Battery charge. Data may be affected before the instrument provides an indication that thebatteries need to be recharged. This problem may be identified by downward trends on thecontrol chart, and should be corrected by putting fresh batteries in the instrument. If possible, thisshould be done before an out-of-control situation occurs. The instrument should normally beoperated on A/C power to prevent issues with battery charge, but if the instrument is used onbattery power, the battery charge should be monitored.

2. Extreme ambient conditions. Extreme heat, cold, or humidity may all cause instrument problems.If these are the suspected cause, correct the conditions in the laboratory, and restart analysis.

3. Improper operator technique. The XRF should be mounted in a stand if possible for analysis, butvibration of the XRF during analysis may affect the instrument. If vibration is suspected, removethe source of vibration and repeat the analysis.

4. Torn XRF window membrane. A torn membrane may cause difficulties with internal temperatureregulation. If the membrane is torn, replace it following the manufacturer’s documentation. Theinstrument will need to be restarted after this service is conducted.

5. Jarring of the instrument strong enough to alter the alignment of the detector and/or internaloptics, or electronic wear within the instrument. If either of these cases occurs, the XRF must bereturned to the manufacturer for repair prior to further use.

Follow the instructions below for corrective actions based on specific causes:

1. Detected target analyte in the blank.

a. Inspect the blank for possible problems such as wrinkles in the membrane, and correct ifnecessary.

b. Repeat the blank analysis.

i. If the repeat blank analysis shows no detections of target analytes, the instrumentis in control, and sample analysis may begin.

ii. If the repeat blank detects target analytes again, the instrument is out of control,and the cause must be investigated and corrected before sample analysis canbegin.

2. LCS reading outside 2 standard deviations but inside 3 standard deviations on the control chartfor the specific instrument, SRM, analyte, and scan time. The instrument should be considered tobe in an uncertain state, and the following actions taken to either identify the instrument as incontrol or out of control.

a. Do not analyze additional samples on the instrument until it is returned to in-controlstatus.

b. Immediately repeat the LCS analysis.

i. If the repeat LCS reading falls within 2 standard deviations of the mean on thecontrol chart, and there are no issues with the LCS results for any of the otheranalytes:

1. The instrument is in control, and sample analysis may resume.

2. All samples analyzed between the last passing LCS and the false alarmLCS may be reported without reanalysis.

3. Record both the original and repeat LCS readings on the control chart.

ii. If the repeat LCS also falls outside 2 standard deviations of the mean on thecontrol chart for one or more analytes, examine the LCS cup for damage to themembrane.



1. If damage is noted, repair or replace the damaged LCS cup. Use anotherLCS cup, and repeat the LCS analysis. If it passes, the instrumentremains in control, and sample analysis may resume. All samplesanalyzed between the last passing LCS and the false alarm LCS may bereported without reanalysis. Record both the original and repeat LCSreadings on the control chart.

2. If damage is not noted, troubleshoot the instrument (check batteries,window membrane, vibration or jolting of the instrument during thereading, ambient temperature/humidity conditions, and operator error).

a. If any obvious problems are found, correct them and rerun theLCS set.

i. If the problem is corrected, the instrument is in control,and sample analysis may continue. All samplesanalyzed between the last passing LCS and the falsealarm LCS may be reported without reanalysis. Recordboth the original and repeat LCS readings on the controlchart.

b. If no obvious problems are found, shut down the instrument andrestart it with all usual startup procedures and QC.

i. If the problem is corrected, return to an in-control state.The instrument is considered to have been out of controlbetween the last passing LCS and the shutdown of theinstrument. Reanalyze all samples run after the previousin-control LCS check.

ii. If the problem is not corrected, the instrument remainsout of control, and additional troubleshooting may benecessary. Steps may include shutting the instrumentdown and letting it equilibrate for 3-4 hours orovernight, consulting the instrument manufacturer orother XRF expert, and returning the instrument to themanufacturer for repairs and/or recalibration.

3. LCS reading outside 3 standard deviations on a control chart for the specific instrument, SRM,analyte, and scan time. The instrument should be considered to be in an uncertain state, and thefollowing actions taken to either identify the instrument as in control or out of control.

a. Do not analyze additional samples on the instrument until it is returned to in-controlstatus.

b. Inspect the LCS cup for damage as noted in Section 4.5.2.a.ii, and whether damage isnoted or not, proceed as described in that section.

4. Seven consecutive readings on the same side as the mean of the control chart. The instrument isconsidered to be out of control, and the following actions should be taken to correct the situation:

a. Remove the batteries for charging, and replace them with new or recharged batteries.

b. Re-analyze all samples analyzed by the XRF since it went into out of control status,which means those samples between the sixth and seventh LCS that were on the sameside of the mean (earlier samples do not need to be reanalyzed).

Log all nonconformances and corrective actions using the Nonconformance Log (Attachment B).



5.0 DOCUMENTATION

XRF readings for each sample will be documented on a Sample Analysis Log (Attachment A). XRFreadings and sample masses for subsamples will be documented on a Subsample Preparation Log.Record all nonconformances and corrective actions using the Nonconformance Log (Attachment C).Similar electronic or paper forms that record the same information may be substituted.

ATTACHMENT A

Sample Analysis Log

SAMPLE ANALYSIS LOG

Instrument ID:

ATTACHMENT B

Subsample Preparation Log

SUBSAMPLE PREPARATION LOG

Property ID: Initials/Date of Preparer:

Sample IDSubsample

ID

Original massof fraction <60-mesh (g)

SubsampleMass (g)

ArsenicReading of

OriginalSample(mg/kg)

Arsenic Readingof Subsample

(mg/kg)

LeadReading of

OriginalSample(mg/kg)

Lead Readingof Subsample

(mg/kg) Pass/Fail

ATTACHMENT C

Nonconformance Log

NONCONFORMANCE LOG

Instrument ID:

Date/Time Maintenance Task or Problem Description Corrective Actions Taken Initials

PWT STANDARD OPERATING PROCEDURE

SURFACE and SHALLOW SUB-SURFACE SOIL SAMPLING for INORGANICSProcedure No. PWT-COS-427

Revision 4Date effective: 03/23/2017

APPROVED: /s/ 03/23/2017 Page i of 12PWT Project Manager, Date

TABLE OF CONTENTS

TABLE OF CONTENTS............................................................................................................................... i

Attachment A Surface Soil Sample Field Data Sheet ............................................................................... i

1.0 PURPOSE AND SCOPE.................................................................................................................. 2

4.0 PROCEDURES................................................................................................................................. 4

4.1 Identification of Decision Units.................................................................................................... 4

4.2 Five-Point Composite Sample Collection..................................................................................... 5

4.3 Incremental Sample Collection..................................................................................................... 7

4.4 Increment Volume Considerations ............................................................................................... 8

5.0 DECONTAMINATION ................................................................................................................... 9

6.0 DOCUMENTATION........................................................................................................................ 9

List of Attachments

Attachment A Surface Soil Sample Field Data Sheet

REVISION LOG

RevisionNumber

Description Date


1 Add sample collection for Mercury analysis; editorialchanges

November 2015

2 Provide directions for Ecotox sampling for the OU1 RIBackground Study

April 2016

3 Add collection of extra sample volume from 0-1 inchinterval, and decontamination infomation

December 2016

4 Add collection of pea gravel from high use playground March 2017




This Standard Operating Procedure (SOP) provides technical guidance and methods that will be used tocollect surface and shallow subsurface soil samples for chemical analysis during environmentalinvestigations performed during the Remedial Investigation (RI) in the Community Properties Study Area(CPSA) of the Colorado Smelter Site. This SOP serves as a supplement to site-specific Health and Safetyplans and the site-specific CPSA RI Quality Assurance Project Plan (QAPP). This SOP may be used inconjunction with other SOPs. This SOP is not appropriate for sampling to determine concentrations oforganic compounds.

The SOP describes procedures for collection of five-point composite samples (i.e., composed of fiveequal sized aliquots collected in a star pattern or otherwise distributed approximately evenly within thearea to be characterized), and incremental samples (i.e., composite samples composed of 30 equal sizedaliquots collected on a grid; typically performed on decision units (DUs) over 5000 square feet or vacantproperties, and in park areas to be characterized). Play areas and playgrounds are often covered withsand, pea gravel, or other distinct, imported material. In these areas, soil below the imported material willbe sampled by removing the imported material and using the top of the native soil profile as the surface(0”). The imported material will be sampled separately as described in Section 4.5.

Typically, five-point composite samples will be collected from the surface interval (0-1”) from each DUon the property. Five-point composite samples will be collected at multiple depths (0-1”, 1-6”, 6-12”,and 12-18”) from each DU on the property, exceptions to five-point composite sampling are discussed inSection 4.3. Unless otherwise specified by the QAPP, the term “surface soil” refers to the top inch ofsoil following removal of surface vegetation and other debris from the sampling area. Samplers shallnote the presence or absence of vegetative cover on the sampling sheets, and when vegetative cover ispresent, and the start of the depth interval will begin below the root structure of the plant material. Insupport of the Background Study for the RI, a separate 5-point composite sample will be collected for the0-6 inch soil horizon for Ecotox benchmark values in urban areas.

Shallow subsurface soil refers to the interval from 1” to 18” below the surface. Sample collection depthsother than the ranges given above may be specified by the QAPP.

2.0 REQUIREMENTS

The following sections identify the requirements for Quality Assurance / Quality Control (QA/QC),health and safety, and personnel qualifications for surface soil sampling.

2.1. Quality Assurance / Quality Control

Follow all QA/QC requirements identified for the project as specified in the approved project planningdocuments.

2.2. Health and Safety

Follow health and safety requirements identified in the Site-Specific Health and Safety Plan (HASP), JobSafety Analyses (JSAs), any applicable Task-Specific HASPs prepared by the PWT Team, orSubcontractors, and the associated Activity Hazard Analyses (AHAs).



A walkthrough shall be performed to identify any site specific hazards. Site specific hazards may includebut are not limited to unidentified utilities such as underground propane lines, septic system drainfields,sprinkler systems, and owner placed electrical lines. Utility clearance will have been accomplishedaccording to the PWT Utility Clearance SOP (PWT-ENSE-413). Other site specific hazards may includelow tree limbs, uneven ground, unleashed animals, ponds, and miscellaneous equipment.

2.3. Personnel Qualifications

Personnel performing surface and shallow subsurface soil sampling activities are required to havecompleted the initial 24-hour OSHA classroom training that meets the Department of Labor requirements29 CFR 1910.120(e), and work under the supervision of a 40-hour OSHA trained person. Supervisors ofsurface and shallow subsurface soil sampling activities are required to have completed the initial 40-hourOSHA classroom training that meets the Department of Labor requirements 29 CFR 1910.120(e), and mustmaintain a current training status by completing the appropriate annual 8-hour OSHA refresher courses.Personnel must also have read and signed the appropriate HASP(s). Prior to engaging in surface and shallowsubsurface soil sampling activities, personnel must have a complete understanding of the proceduresdescribed within this SOP and, if necessary, will be given specific training regarding these procedures byother personnel experienced in the methods described within this SOP.

Only qualified personnel will be allowed to perform these procedures. Required qualifications varydepending on the activity to be performed. If work is being performed by a subcontractor, thesubcontractor's project manager will document personnel qualifications related to this procedure in thesubcontractor's project QA files.


The following materials and equipment may be necessary for surface and shallow subsurface soilsampling:

• Sample containers: Gallon-sized zip top bags, Quart sized zip top bags, and glass jars

• Leather work gloves

• Nitrile disposable gloves

• Bound field logbook

• Sampling site location map, which provides property address, project specific Property ID, andidentifies any DUs to be sampled for Mercury or to be sampled incrementally

• Completed access agreement(s) (if owner and occupant are different, both must have completed anaccess agreement)

• 100-foot survey tape

• Measuring device such as small tape measure or calibrated instrument to identify sample depthincrements

• Soil sample field data sheets (Attachment A)

• Approximate 4 foot by 6 foot plastic sheeting

• Surveying stakes or pin flags for marking of grid nodes and/or sampling locations



• Monitoring equipment and personal protective equipment (PPE) as outlined in the HASP.

• Decontamination equipment and supplies (e.g., high pressure sprayer/washer, wash/rinse tubs, brushes,Alconox (or equivalent), plastic sheeting, paper towels, sponges, baby wipes, garden-type watersprayers, large plastic bags, potable water, and deionized or distilled water)

• Sharp cutting tool for removing turf layer, such as a curved knife

• Stainless steel scoops or spoons, knives, pick, and mixing bowls identified for each discrete depthinterval to be sampled. Each bowl shall be clearly labeled with the sample depth interval.

• Decontaminated drive sampler device with spare stainless steel tips

• Slide hammer drive device

• Sample collection supplies (e.g., plastic re-closeable plastic bags or equivalent, waterproof markers,sample labels, chain of custody [COC] forms, cooler for sample storage, ice or ice substitute, clearplastic and strapping tape, custody seals, trash bags)

• Drums, 5-gallon buckets, or other approved containers for containing investigation derived waste (IDW)soil and water

Other materials and equipment may be needed based on field conditions.

4.0 PROCEDURES

After samplers have verified that they have all the necessary paperwork to enter the property, and theyhave completed a site walkthrough in accordance with the HASP, they will set up to sample.

Photograph the yard to document pre sampling conditions. Choose a safe location to set up the sampletable during the site walkthrough. Lay out a tarp beneath the table and plastic sheeting over the table,and set up a three stage decontamination station in accordance with PWT-ENSE-424, Personnel andEquipment Decontamination. Set out sample containers, coolers, and bowls for combining the samplealiquots. Sample aliquots may be combined directly in the plastic sample bag, if desired.

4.1 Identification of Decision Units

In order to characterize the nature and extent of soil contamination at the property, each residentialproperty sampled in the RI project will be divided in one or more discrete DUs. The specific DUs to besampled at each property will be indentified in advance.

Generally, the homes have a drip line DU, which has been be defined as the exposed ground surfacelocated immediately adjacent to the house out to a total width of 2 to 3 feet. At some homes with verynarrow side yards (less than 5’ wide), the side yard will be considered part of the drip line DU. Front andback yards were the most common DUs identified at the DMA properties, and are expected to becommon in the RI properties as well. Where a distinct play area or garden has been identified, it will besampled as an independent DU.

Sampling sites specified for the RI project will be located by street address and property ID as listed onthe property map and the access agreements.



Identification of DUs for the properties will be performed by the project team at a time between theproperty survey and the sample collection event. These decisions will be based on field observations ofthe property, and conversations with the occupants, when appropriate. DUs will be marked by thesampling crew on the property sketch. The sampling scheme described in the following sections shouldbe methodically applied to each identified DU at each property.

4.2 Five-Point Composite Sample Collection

Five-point composite samples will be collected for the majority of surface and subsurface soil samples onthis site. These samples are comprised of five sample cores collected at points spread around the yardarea to be characterized.

The various yard components or DUs to be sampled will be identified on the property map and verifiedduring the site walkthrough. The sample crew will identify approximate sample locations in pen on theproperty map, and will stake the locations in the yard using pin flags. This typically involves staking a 5point pattern for the five sampling locations for a DU, but may involve a different layout if site specificfactors make adjustment necessary (to avoid a yard feature like a concrete walkway, for example). Eachcomposite surface soil sample will be collected as follows:

1. Use a pin flag to mark the approximate center of the DU, then place the remaining 4 pin flags in across or diamond pattern, or in another arrangement which generally covers the DU while avoidingfeatures which would impede sampling (concrete walkways, etc).

2. Collecting a sample core. Leather work gloves are to be worn while using the sampling tool.Samples shall be collected by driving the slide hammer down to approximately 20 inches belowground surface with sharp blows, and then using the T-bar to twist the sampling tool out of theground. Do not jerk the sample tool out of the ground, because the force can dislodge the sample.Carefully lay the sampling tool (which contains the first aliquot of each depth interval of the 5-pointcomposite sample) on the table.

3. Remove leather work gloves and put on Nitrile gloves.

4. If the ground surface where the core was collected is generally bare of vegetation, measure 1” fromthe top of the sample, and then break, cut, or otherwise separate the recovered core at the 1” mark. Ifvegetative cover exists such that there is a substantial vegetative mat present, then measure the 1”from the base of the vegetative mat for the first sample core, and break, cut, or otherwise separate therecovered core at the 1” mark. The vegetative material shall be removed as a mat and lose soilparticles removed by shaking inside the gallon-sized zip top plastic bag, discard vegetative materialin the IDW bucket. Carefully transfer the soil aliquot into the sample bag labeled for the 0-1”interval. Repeat this process for the 1-6”, 6-12”, and 12-18” depth intervals. There will be someextra soil below the 18” mark. Discard this soil in the IDW bucket. During the Background Study,Ecotox samples from urban sample locations will be collected adjacent to a five point samplelocations in urban DU’s. The sample will be a composite of a separate 0-6 inch increment and will beun-sieved.

5. Repeat steps 2 through 4 at the remaining four pin flagged locations.



6. For 5-point composite samples, additional sample volume is collected from the 0 to 1 inch interval inorder to ensure that sufficient material is available for analysis. To collect this material, use adecontaminated trowel and the bag or container containing the 5 sample cores from the 0 to 1 inchinterval. At each of the open holes from sample core collection, place the tip of the trowel againstthe open hole 1 inch below the ground surface (or one inch below the bottom of the vegetative mat invegetated areas). Push the trowel forward approximately 1 inch, or to the mark on the trowel, andthen lift carefully to minimize spillage. Transfer the soil to the sample baggie. Repeat this process atthe remaining 4 holes for that DU, being sure to obtain approximately the same amount of samplematerial from each hole.

7. All sample cores for a given depth interval in a DU (five cores) are combined in a single sample bag.

8. After one five-point composite sample has been collected for each depth interval at the DU, it issometimes necessary to repeat the process a second time to collect a sample for mercury analysisthrough an offsite laboratory. For collection of the mercury sample, soil cores should be collectedapproximately six inches away from each original pin flag. To prevent volatilization of mercurypotentially present in the sample, sample cores should be exposed to air for the minimum amount oftime necessary. Place sample aliquots in sample jars (rather than zip-top bags), and re-close the jarsbetween aliquots. When all five aliquots are in the jar, mix using gloved hand or stainless steelspoon, then re-close the jar and place in a cooler on ice as soon as possible. Mercury samples will besent to the CLP lab without further sample preparation. Typically, additional volume for mercuryanalysis will be collected for 5% of the total samples. The frequency of mercury sampling isspecified in the project-specific QAPP.

9. After one five-point composite sample has been collected for each depth interval at the DU, it issometimes necessary to repeat the process a second time for a replicate sample, and a third time for atriplicate sample. For collection of the replicate samples, soil cores should be collectedapproximately 1 foot up and to the right of each pin flag. For the triplicate sample, soil cores shouldbe collected approximately 1 foot up and to the left of each pin flag. Typically, replicates will becollected for 5% of the total samples. The frequency of replicate sampling is specified in the project-specific QAPP.

10. It is not necessary to mix or homogenize the aliquots, because the soil will be processed at the fieldsoils laboratory.

11. Complete all fields on the Soil Sample form (Attachment A). Label and handle the containers asspecified in the PWT Sample Handling SOP (PWT-ENSE-406).

12. Decontaminate the sampling equipment in accordance with the PWT Personnel and EquipmentDecontamination SOP (PWT-ENSE-424).

13. Repeat the five-point composite soil sampling procedure for all DUs identified on the propertysketch, unless one or more DUs have been identified to receive 30-pt incremental compositesampling.



4.3 Incremental Sample Collection

Incremental samples consist of approximately 30 sample aliquots collected on a grid and composited forlaboratory chemical analysis. In cases where the property in question is significantly large, a 30-ptincremental sample will be considered. For this project, incremental samples will be combined in asingle container in the field and mixed/homogenized at the field soils laboratory in accordance with theXRF Sample Preparation SOP (PWT-COS-302).

Incremental surface soil samples will be collected as follows:

1. After the DUs have been identified and designated for 30-pt incremental sampling on theproperty sketch, label the incremental sample bag with the appropriate sample ID for the first DUto be sampled.

2. Starting at a random point near the corner of the DU, establish a grid pattern appropriate for thesize of the DU that accommodates the spacing necessary in order to obtain 30 aliquots.

3. A sample core will be collected to a depth of 18 inches at each pin flag location. These locationscorrespond to the approximate bottom center of each grid square. If there is significantvegetation, be sure to sample a full 18 inches of soil below the vegetative mat.

4. Collecting a sample core. Leather work gloves are to be worn while using the sampling tool.Samples shall be collected by driving the slide hammer down to approximately 20 inches belowground surface with sharp blows, and then using the T-bar to twist the sampling tool out of theground. Do not jerk the sample tool out of the ground, because the force can dislodge thesample. Carefully lay the sampling tool on the table. Because the sampling tool has a constantdiameter core barrel, and samples from a given depth interval will be the same length, the samplealiquots obtained using the standard method will be of equal volume.

5. Remove leather work gloves and put on Nitrile gloves.

6. If the ground surface where the core was collected is generally bare of vegetation, measure 1”from the top of the sample, and then break, cut, or otherwise separate the recovered core at the 1”mark. If vegetative cover exists such that there is a substantial vegetative mat present, thenmeasure the 1” from the base of the vegetative mat for the first sample core, and break, cut, orotherwise separate the recovered core at the 1” mark. The vegetative material shall be removedas a mat and lose soil particles removed by shaking inside the gallon-sized zip top plastic bag,discard vegetative material in the IDW bucket. Carefully transfer the soil aliquot into the samplebag labeled for the 0-1” interval. Repeat this process for the 1-6”, 6-12”, and 12-18” depthintervals. There will be some extra soil below the 18” mark. Discard this soil in the IDWbucket.

7. Repeat steps 4 through 6 at each of the 30 pin flag locations of the grid pattern.

8. After one incremental sample has been collected at the decision unit, it is sometimes necessary torepeat the process a second time for a replicate incremental sample, and a third time for atriplicate sample. For collection of the replicate sample, soil cores should be collected from theupper right hand corner of each imaginary grid square. For the triplicate sample, soil cores



should be collected from the upper left hand corner of each imaginary grid square. Typically,replicates will be collected for 5% of the total samples. The frequency of replicate incrementalsample collection is specified in the project-specific QAPP.

9. It is not necessary to mix or homogenize the incremental samples, because the soil will beprocessed at the field soils laboratory.

10. Complete all fields on the Soil Sample form (Attachment A). Label and handle the containers asspecified in the PWT Sample Handling SOP (PWT-ENSE-406).


12. Repeat the incremental sampling procedure for any other DUs identified to receive incrementalsampling on the property sketch.

4.4 Increment Volume Considerations

In order to appropriately represent the area sampled, without over-representing or under-representing anyparticular portion of the DU, it is important that each individual aliquot (or increment) of a particularsample has the same volume/mass. It is not necessary that aliquots of different samples be the same size.

When the standard sample collection approach is used, the constant volume of the sample collection toolensures each aliquot will have the same volume/mass.

4.5 Sampling Imported cover materials in play areas and playgrounds

If the play area/playground cover material is sand, then the typical sample collection procedure asdescribed in Section 4.2 or 4.3 may be used to collect a sample of the cover material, and the underlyingnative soil will be sampled as described in Section 1.0. In order to appropriately characterize the peagravel and other coarse materials which may be found covering native soil in play areas and playgrounds(such as was identified at Benedict Park) the following equipment and work instruction procedures maybe used.

1. Using a clean (decontaminated) 5-gal bucket with a ¼-inch to 1/8-inch screen over the top,collect a 0-6 inch aliquot of pea gravel with a scoop from each 5-pt composite or 30-ptincremental sampling point. Number of aliquots in the sample (5 or 30) will be specified by thePWT Project Manager or by the Project QAPP.

2. Sieve the pea gravel and place the course fraction back into the play area. The goal is to gatherabout 100 grams or more of the fine dust which comes off the pea gravel without collecting thegravel itself.

3. At the completion of sampling in the playground transfer the fine material into a samplecontainer.

4. Complete all fields on the Soil Sample form (Attachment A). Label and handle the container asspecified in the PWT Sample Handling SOP (PWT-ENSE-406).




6. Repeat the pea gravel incremental sampling procedure for any other DUs identified with peagravel.

5.0 DECONTAMINATION

Decontaminate soil sampling tools between each decision unit to be sampled using a three stagedecontamination process as described in PWT-ENSE-424, Personnel and Equipment Decontamination.Buckets shall be labeled clearly to ensure they are only used for their assigned decontamination purposesand not used for IDW transfer, or other purposes. The washwater and tapwater rinse buckets may beused for up to four DUs at a single residence before being replaced. Buckets of fresh alconox washwaterand tapwater for rinsing shall be used at each new residence to be sampled. Fresh decontamination watershall also be used after completing decontamination of four decision units at a single residence, and anytime that the water becomes too turbid to see the bottom of the bucket.

6.0 DOCUMENTATION

Personnel collecting samples are responsible for documenting sampling activities in the field logbookand on the Surface Soil Sample Field Data Sheet (Attachment A). Discussions of sample documentationare provided in the PWT Sample Handling SOP and the Borehole Logging SOP.



ATTACHMENT A

Soil Sample Field Data Sheet



Page I of3

Inorganic Soil Sampling Field Form

Sample Information

Date: _____ _ Start/End Time: __ ~---Property ID Number :~P~C~------

Project: Colorado Smelter CPSA RI

Sample Collection Method (circle one):

Sampler(s): ___ _ Company: ____ _

Liner? YIN Drive Sampler Other: ------

Yard Hazards : _______________________________ _

Sample Locations Recorded (circle one) : GPS Prope1ty Map Other: ______ _

Sample Identification Time No. of

QA/QC Incremental

Comments Holes V/N

Sampler Name /Signature/Date (relinqmsh custody ofhsted samples): ____________ _

Field Lab Name /Signature/Date (accept custody oflisted samples): _____________ _



Page 2 of3

Inorganic Soil Sampling Field Form

Property Information

Property Contact Phone Number: ________ _ Property Identification Code: P~C=----

Property Owner: ________________________________ _

Property Address:

Present during sampling? (Y/N):Owner: __ _ Occupant: ____ _

Type of Roof: ____________________ _ Condition: -----

Type of Siding: ___________________ _ Condition: ____ _

Type of Trim (windows, doors, eves): ________________________ _

Outbuildings? Type? __________________ _ Condition: ____ _

Porch/Other: ____________________ _ Condition: ____ _

Gutters: _______________________ _ Condition: ____ _

Sprinkler System present?: ________________ _ Location:. _____ _

Sample Containers: 4 oz glass jar 8 oz glass jar Ziptop bagged Other: ______ _

Number of Sample Containers: ___ _ Preservative: 4°C ±2°c none Other: ___ _

Analyses: TAL by 6020B (ICP-MS): antimony, arsenic, cadmium, copper, lead. zinc by 6200 (XRF)

Weather: ___________________________________ _

Visitors : ___________________________________ _

Comments/Observations: _____________________________ _

Samplers Name and Signature: ___________________________ _

Reviewer Name and Signature: ___________________________ _



A Yard Map will be used as page 3 of the field sampling form.

PWT STANDARD OPERATING PROCEDURESPATIAL DATA SUBMITTALS Procedure No. PWT-ENSE-402


APPROVED: /s/ Page i of 21PWT Project Manager Date

TABLE OF CONTENTSSection Page No.

1.0 INTRODUCTION............................................................................................................... 1

2.0 ARCVIEW 8 (ESRI ARCGIS) COMPATIBILITY ........................................................... 1

3.0 SPATIAL DATA FORMAT............................................................................................... 1

3.1 SHAPEFILE (*.shp, *.shx, *.dbf, *.prj) ......................................................................... 1

3.2 DEFINING SPATIAL REFERENCE INFORMATION................................................ 2

3.2.1 Defining a Shapefile Projection Using ArcCatalog .................................................. 23.2.2 Defining a Shapefile Projection Using ArcToolbox ................................................. 43.2.3 Reprojecting a Shapefile from One Spatial Reference System to Another............... 6

3.3 NON-VECTOR DATA .................................................................................................. 8

3.4 SAVING A LAYER FILE REPRESENTATION (*.lyr) OF EACH DATA SOURCE. 8

4.0 FILE NAMING CONVENTIONS...................................................................................... 8

4.1 PREFIX – CATEGORY ................................................................................................. 8

4.2 NAME – DESCRIPTION............................................................................................... 9

4.3 SUFFIX – SERIES, VERSION, SOURCE................................................................... 10

5.0 DIRECTORY STRUCTURE ........................................................................................... 10

5.1 BASEWIDE DATA AND MAP DOCUMENTS......................................................... 10

5.1.1 CAD and Image Files.............................................................................................. 115.1.2 Project-specific Data ............................................................................................... 11

6.0 DATA DICTIONARY...................................................................................................... 11

7.0 METADATA .................................................................................................................... 11

7.1 ARCCATALOG-BASED XML FORMAT ................................................................. 11

7.2 SPATIAL REFERENCE INFORMATION MUST BE DEFINED ............................. 13

7.3 MINIMUM REQUIREMENTS.................................................................................... 13

8.0 MAP DOCUMENT .......................................................................................................... 13

8.1 THE MAP DOCUMENT (*.mxd)................................................................................ 13

9.0 IMPORTING ARCVIEW 3.X PROJECTS INTO ARCVIEW 8..................................... 14

9.1 METHOD 1. IMPORTING BY LAYOUT................................................................... 15

9.2 METHOD 2. IMPORTING SELECTED VIEWS........................................................ 15

9.3 CORRECTING IMPORT ERRORS ............................................................................ 16

PWT STANDARD OPERATING PROCEDURESPATIAL DATA SUBMITTALS Procedure No. PWT-ENSE-402


APPROVED: /s/ Page ii of 21PWT Project Manager Date

List of Attachments

Attachment A: U.S. EPA Region 8 GIS Deliverable Guidance

REVISION LOG


1.1 Original SOP September 2002

2.0 QA Review and Update April 2012

3.0 QA Review and Update October 2016

ANNUAL REVIEW LOG

RevisionReviewed

Description Date

2.0 Annual QA Review August 2013

2.0 Annual QA Review September 2015

SPATIAL DATA SUBMITTALSProcedure No. PWT-ENSE-402


1.0 INTRODUCTION

This manual provides detailed instructions to allow contractors to submit spatial data to PWT ina format that can be used directly in PWT’s software and filing structure. All contractors will beprovided with this document before contract initiation. No contractor will be allowed to submitany spatial data developed without adhering to the rules described in this document, unlessagreed to before contract initiation. In addition, the contractor must generate the projects inESRI ArcView 8.X GIS.* and not ESRI ArcView 3.X GIS.* for submittal to PWT. Should thecontactor generate the project in ESRI ArcView 3.X GIS.* then all functionality of an ESRIArcView 8.X GIS.* project must be created such that labels, etc. are associated with the layersand not included merely as graphics.

The National Geospatial Data Policy (NGDP) establishes principles, responsibilities, andrequirements for collecting and managing geospatial data used by the U.S. EnvironmentalProtection Agency (EPA). Within EPA Region 8, GIS file delivery formats for all materialsdeveloped in support of CERCLA related site work are specified in the GIS DeliverableGuidance in A. All geospatial data that is collected, acquired, or managed in conjunction with anEPA project must comply with the requirements specified in these documents.

2.0 ARCVIEW 8 (ESRI ARCGIS) COMPATIBILITY

All data submitted must adhere to the requirements described below to allow it to be viewed andmanipulated in ESRI ArcView 8.X GIS. ArcView 8 is a member of the ESRI ArcGIS family ofsoftware products that enables PWT to use GIS for field, office, database, and internet-basedapplications. By providing PWT with data already prepared for use in ArcView 8, the contractorwill enable PWT personnel to maximize work efficiency and to more easily build newinformation by comparing and combining data from various submissions and contractors.

ArcView 8 consists of three separate, but integrated, applications: ArcCatalog, ArcMap andArcToolbox. ArcCatalog is used to manage data in a Microsoft Windows Explorer-likeenvironment. ArcCatalog functions include previewing and searching for data, generating andreviewing metadata, generating new files for data storage, and organizing folders. ArcMap isused to view, edit, analyze and map data. ArcToolbox includes 20+ tools for data conversionand management and permits batch processing.

3.0 SPATIAL DATA FORMAT

3.1 SHAPEFILE (*.shp, *.shx, *.dbf, *.prj)

All vector data sources (points, lines, or polygons) should be provided in ESRI shapefile format.ArcView 8 includes conversion tools in ArcCatalog and ArcToolbox that allow some otherformats to be converted into shapefiles; however, to ensure maximum convertibility, it is best togenerate new data directly as shapefiles using ArcMap edit function. A shapefile consists of atleast three files by the same name in the same directory that have different file extensions:

<shapefile name>.shp – Map features

<shapefile name>.shx – Index file to associate map features with attributes



<shapefile name>.dbf – Tabular, feature attribute information

<shapefile name>.prj – Spatial reference (projection) information

3.2 DEFINING SPATIAL REFERENCE INFORMATION

All data sources should use the State Plane Coordinate System with the following parameters:

COORDINATE SYSTEM: State Plane

ZONE: State Specific [ex. Colorado Central (3476), (FIPSZONE : 502)]

DATUM: NAD83

SPHEROID: GRS80

UNITS: Feet

Although older versions of ESRI ArcView software do not utilize the *.prj file associated withshapefiles, explicitly defining a shapefile’s spatial reference information is imperative inArcView 8. Without projection information, a shapefile added to ArcMap produces a warningmessage and may not work correctly in certain operations. There are two ways to define theprojection of a shapefile in ArcView 8: 1) Using ArcCatalog (single shapefile), 2) UsingArcToolbox (multiple files).

3.2.1 Defining a Shapefile Projection Using ArcCatalog

1. Right –click on the shapefile of interest in the ArcCatalog Table of Contents and chooseProperties from the context menu to access the Shapefile Properties dialog.

2. In the Fields tab, choose the record selector left of the Shape name in the list of Field Names.

3. Select the ellipses following the Spatial Reference property in Field Properties to produce theSpatial Reference dialog.



4. If no other spatial data source has yet hadits projection defined, it will be necessaryto choose the Select…option to select apredefined coordinate system (See 5a). Ifeven one other data source has already hadits projection defined that shares the sameprojection as the new data source todefine, choose the Import… option (See5b).

5a. Browse to the coordinate systemdefinition, usually defined by a coordinatesystem, datum, units and locationparameter (zone) that matches thecoordinates the spatial data source isactually using. For DFC data, alwaysmake sure that you data is developed toallow it to be correctly defined with theNAD 1983 State Plane Colorado CentralGIPS 0502 (Feet).prj.

Coverages

EJ .. i:I Base

$ .. t:JI BASE

ltJ .. t:JI SITE_L

$ .. V SITE_P

>· ~ bonvueshp. shp

>· dfcbuild. shp

!,,, :::: ~fg~::il~ ~1p ~ ~opy 'X Qelete mcgcult. shp

Rename mcgulchwtre _______ _

newside. shp Create La:t,er, , , perifence.sh --------

siteareabuff !;_xport

!,_· .... ~ stream.shp lii::li. z B,eview/Remat ( " surfwtr. shp

L ... ~ topo _fnl. shi: ~ ~ .. ~ Locations --------

Propert[es ...

Shapefile Properties

Gener al Fields I I ndes I Field Name Data Type l• I

FID Object ID J Shape Geometry

AREA Double PERIMETER Double

NE'>MlUILD Double

NE'>MlUILD I Double

ACAD TEXT Text ~ ~I ri~C:- 0 ri.-.,,~I""

Click any field to see its properties.

Field Properties

Geometry Type Polygon

Avg Num Points 0

Grid 1 1000

Grid 2 0

Grid 3 0

Contains Z values No

Contains M values No _,,,,,, Default Shape field Yes

Spatial Reference NAD 1983 Sta!ePlane C

Import...

To add a new field, type the name into an empty row in the Field Name column, click in the Data Type column lo choose the data type, then edit the Field Properties.

OK Cancel

Spatial Reference Properties

Coordinate System I XN Domain I

Name: JNAD _ 1983_StalePlane_Colorado_Cenlral_FIPS_050,

Details:

Alias: Abbreviation: Remarks: Projection: Lambert_ Conformal_ Conic Parameters:

False_Easling: 3000000.000316 False_Northing: 999999.999996 Cenlr al Meridian: -1 05. 500000 Standard Parallel 1: 38.450000 S landard - Parallel-2: 39. 750000 Latitude_OI_Origin 37.833333

Linear Unit: Foot_US (0.304801) Geographic Coordinate S yslem: ~

Select. ..

Import ...

New

Modify ...

Clear

Save As .. .

Select a predefined coordinate system.

I mporl a coordinate system and XN, Z and M domains from an e:-cisting geodataset (e.g., feature dataset, feature class, raster].

Create a new coordinate system.

E dil the properties ol the currently selected coordinate system.

Sets the coordinate system to Unknown.

Save the coordinate system to a file.

____________ o_K_~I I Cancel

Apply

Apply

I

X



5b. Browse to the data source that has already had its projection defined to automatically assignthe same one to the data source of interest.

3.2.2 Defining a Shapefile Projection Using ArcToolbox

If more that one data source needsto have its spatial referenceinformation defined, it is moreefficient to use ArcToolbox todefine the shared projection ofmultiple data sources at one time.

1. Choose the Define Projection Wizard (shapefiles …) option from the ArcToolbox DataManagement / Projections tools.

2. Select all the data sources that share the same projection by browsing and holding down the<SHIFT> or <CTRL> keys to select multiple files.

3. Choose Next, then Select Coordinate System to launch the Spatial References Propertiesdialog.

Look in: 1~ IU!•ll=fillffl

l!ffilNAO 1983 StatePlane California 11 FlPS 0402 (Feet).pr j

@ NAO 1983 StatePlane California 111 FJPS 0403 (Feet) .prj

8,NAD 1983 StatePlane California IV FIPS 0404 (Feet).pr j

S,NAD 1983 StatePlane California V FIPS 0405 (Feet),prj

@ NAO 1983 StatePlane California VI FIPS 0406 (Feet ) .prj

@ NAO 1983 StatePlane Colorado Central FIPS 0502 (Feet) .prj

@ NAO 1983 StatePlane Colorado North FJPS 050 1 (Feet) .pr j

8,NAD 1983 StatePlane Colorado South FIPS 0503 (Feet) .prj

S,NAD 1983 StatePlane Connect icut FIPS 0600 (Feet) .prj

_J

12,.

/Ill\) NAO 1983 StatePlane

@ NAO 1983 StatePlan,

@ NAO 1983 StatePlane







Browse for Dataset

..,_ bd85a_pl<Jot ,shp

ll!!lllll ..,_ bonvueshp.shp

dfcbuild . shp

dfcwall.shp

dgdrain .shp

downout. shp

feature-pt. shp

gsaaoc.shp

mcgcult. shp

mcgulchwtredge . shp

newside , shp

openarea . shp

!RI

3 ~ ~ !ll«J ff:f: .fill~ :.a,- perifence. shp

proplnduse. shp ..,_ railroad.shp

sitearea. shp

siteareabuffer . shp ..,_ stream.shp

surfwtr . shp

themel.shp

topo _fnl. shp

topocnt, shp

topomcg, shp

twnrge.shp

usgswtr. shp

usgswtrbuff , s~

usgswtrroad .st

wkdrxarc . shp

Name: INAD 1983 StatePlane Colorado Central FI PS 0502 (Feet). pr Add

Show of type I Spatial references 3 Cancel

Name: I bldg_ old shp

Show of type: I Geographic datasets B

¾ Arcloolbm,c - ArcYiew :

Tools Help

EJ.. Data Management Tools

i ... c, About Data Management Tools

EJ ... Projections

:, ... c, About Projections

.... p.• Define Projection Wizard (coverages, grids, TINs)

!·····} +++ Define Pr0Ject1on Wizard (shapef1les, geodatabase)

L .... p,· Project Wizard (shapefiles, geodatabase)

EJ.. My Tools

Wizard for defining the coordinate s_ystem of shapefiles, feature classes and feature datasets.

Add

Cancel

....



4. As in the previous menu usingArcCatalog, choose Select … ifthe same projection has not beendefined yet for any other datasource, otherwise choose Exportto export the projectioninformation from the defineddata source to all the other datasources in the projection list.

5. Choose Next to review the batchprocess information, then chooseFinish to complete projectiondefinition for all selected files.

• Define Projectmn Wizard (shapefiles, geodatabase)

Define Projection Wizard (shapeflles, geodatabase)

Selecl lhe dala .l'OU wanl lo assign a comdinale S.1'Slem

You can assign a coordinate system to shapefiles and geodatabase feature classes and datasets with this wizard.

Data

C: \ gis\DFC\Coverages\Base\dfcwall .. . C: \gis\D FC\Cover ages \8 ase \dgdr ai .. . C: \gis\D FC\Cover ages\B ase\downo .. . C:\gis\DFC\Coverages\Base\gsaao .. . C:\gis\DFC\Coverages\Base\perifen .. . C:\gis\DFC\Coverages\Base\topo_f. .. C: \gis\D FC\Cover ages\B ase\topocn. .. C:\gis\DFC\Coverages\Base\ topom ...

Coordinate S stem

NAD _ 1983_ S tatePlane_ Colorado_ C .. NAD_ 1983_StatePlane_Colorado_C .. NAD_ 1983_StatePlane_Colorado_C .. NAD _ 1983_ S tatePlane_ Colorado_ C .. NAD_ 1983_StatePlane_Colorado_C .. NAD_ 1983_StatePlane_Colorado_C .. NAD _ 1983_ S tatePlane_ Colorado_ C .. NAD _ 1983_ S tatePlane_ Colorado_ C ..

D ala in this list will be assigned the same coordinate system.

< Back Next > Cancel

' Define Projection Wizard (shapefiles, geodatal:iase)

Select the coordinate system you want assigned to the data

Details:

NAD 1983 StatePlane Colorado Central FIPS 0502 Feet Alias:- - - ---

Abbreviation: Remarks:

Projection: Lambert_ Conformal_ Conic Parameters: F alse_Easting: 3000000. 000316 False_Northing: 999999.999996 Central Meridian: -1 05. 500000 Standard Parallel 1 : 38.450000 Standard - Par all el-2: 39.750000 Latitude_(II_Origin: 37.833333

Linear Unit: Foot_US (0 304801) Geographic Coordinate System: Name: G CS_ North_ American_ 1983

< Back

I Select Coordinate System . . I

Next > Cancel

Summary of your input

Input Datasets: C: \gis\D FC\Cover ages\B ase\dfcwalL shp C: \gis\D FC\Cover ages\B ase\dgdr ain. shp C: \gis\D FC\Cover ages\B ase\downout. shp C: \gis\D FC\Cover ages\B ase\gsaaoc. shp C: \gis\D FC\Cover ages\B ase\perifence. shp C: \gis\D FC\Cover ages\B ase\topo_fnl. shp C: \gis\D FC\Cover ages\B ase\topocnt. shp C: \gis\D FC\Cover ages\B ase\topomcg. shp

NAD _ 1983_ S tatePlane_ Color ado_ Centr al_FI PS_ 0502_F eet

Projected Coordinate System Alias: Abbreviation: Remarks:

Projection: Lambert Conformal Conic



3.2.3 Reprojecting a Shapefile from One Spatial Reference System to Another

The two previous sections describedmethods to define the existing projection of adata source. However, in many cases datasources will not already be stored in theState Plane, Colorado Central, NAD83, feetcoordinate system used at the DenverFederal Center. In such instances, it will benecessary to change the underlyingprojection of the data to make it consistentwith these standards. To reproject data, usethe Project Wizard (shapefiles, geodatabase)found in Data Management Tools inArcToolbox.

1. Browse to the files that you wish to reproject. (Warning: The spatial reference system of allfiles to reproject must already have been defined using one of the projection definitionmethods described previously. A warning will display if any of the data sources you choosestill needs to have its projection defined.)

2. Next, choose an output location tostore the results. If you choose thesame output location as your inputlocation, all original files will beoverwritten without a warning.

3. Choose the new coordinate systeminto which to project all datasources selected. In someinstances, you will be asked toselect a transformation to use toconvert from one datum to another.Then, select all input files that arein the same projection, choose theSet Transform button and pick one

• Pro1ect Wizard (shapefiles, geodatabase)

5 elect the data you want lo project

You can project shapefiles and geodatabase feature classes and datasets with this wizard.

Data C: \gis\N ewdat\cover ageslbase\bldg. shp C: \gis\N ewdat\cover ages\base\bridge. shp C:\gis\Newdat\ coverages\base\canopy. shp C: \gis\N ewdat\ cover ages\base\concpad. shp C:\gis\Newdat\ coverages\base\ctr.shp C: \gis\N ewdat\cover ageslbase\ lcwall. shp C: \gis\N ewdat\cover ages\base\gate. shp ; 1 . .. .. .

I Coordinate S vstem NAD _ 1983_ S tatePlane_ Col NAD _ 1983_ S tatePlane_ Col NAD_ 1983_StatePlane_Col_ NAD _ 1983_ S tatePlane_ Col NAD _ 1983_ S tatePlane_ Col NAD _ 1983_ S tatePlane_ Col

~A~-! ~~~-?t ~!ane_~

Data in this list will be projected to the same coordinate system and stored in the same output location.

< Back Next > Cancel

Arcloolbox Warning

& The following datasets do not have projection information , Use the Define Projection Wizard to set this information.

C: \gis\00-713DFC\Arcview\Cover ages\Base \df cbuild, shp

OK

• Project Wizard (shapefiles, geodatabase)

Select where you want to save the projected data

You have selected multiple feature classes or shapefiles to project. Please select the geodatabase, feature dataset or folder to store the output. If the target location is a folder, the output datasets will be shapefiles.

0 utput location:

IC: \gis\N ewdat\reprojected



from the standard list.

4. If the exact extents of your datasources is known, the can beentered in the next frame of theproject wizard. A desiredprecision can also be set at thispoint.

5. After reviewing a summary of thewizard input, choose Finish toregenerate all input into the newprojection you defined.



C: \gis\Newdat\ coverages\base\hydro. shp C: \gis \N ewdat\cover ages \base \perifence. shp C: \gis\N ewdat\cover ages\base\r ailroad. shp C: \ gis\N ewdat\cover ages\base\rec. shp C: \ gis \ N ewdat\cover ages\base \ roadCL. shp C: \gis\Newdat\coverages\base\roads. shp C: \gis \N ewdat\cover ages \base \ sdwkbkpth shp C: \ gis\N ewdat\cover ages\base\spotelev . shp

New location: C:\gis\Newdat\reprojected


Projection: Lambert_ Conformal_ Conic

< Back

• Project Wizard (shapefiles, geodatabase) ·


C: \gis\N ewdat\cover ages\base\hydro. shp C: \gis\N ewdat\cover ages\base\perifence. shp C: \gis\N ewdat\cover ages\base\r ailroad. shp C:\gis\Newdat\coverages\base\rec.shp C: \ gis\N ewdat\cover ages\base\roadCL. shp C: \ gis\N ewdat\cover ages\base\ roads. shp C:\gis\Newdat\coverages\base\sdwkbkpth.shp C: \gis\N ewdat\cover ages\base\spotelev. shp

New location: C:\gis\N ewdat\ reprojected


Projection: Lambert_ Conformal_ Conic

< Back


Finish

Coordinate extents for the output dataset

The following values are an estimate of the output extent based on input datasets.

If you know the e:-:act e:-:tent and precision, you can change these values.

MinX: Max X: !31151 58. 391 7039

MinY: 11683221.4 70368 Max Y: 11692540. 72075761

Precision: I 157508. 294954804

Tools Help ----------=======~-Project progress

Projecting perifence feature class

Wizar lo 1 Cancel

J

Cancel

a different co. _____________________ _

Finish Cancel

X



3.3 NON-VECTOR DATA

Image data should be provided in TIF file format (*.tif, *.tfw). A worldfile that provides spatialreference information (*.tfw) should accompany each TIFF file (*.tif). Digital elevation modelsor other grid-based data should be provided in ESRI ArcInfo GRID file format, which is stored ina named directory and always accompanied by an INFO directory at the same level in thedirectory structure.

3.4 SAVING A LAYER FILE REPRESENTATION (*.lyr) OF EACH DATA SOURCE

For every data source that is used as a layer inan ArcView map document, a layer file shouldbe saved in the same location with the datasource to preserve symbology, labeling, andother rendering properties. To save a layer file,choose each layer in turn in the Table ofContents in ArcMap, right click to expose thelayer context menu, and choose Save as LayerFile. Name the layer file the same name as itssource if only one layer file will ever be needed(symbology and labeling will not need to bedifferent for different uses). Otherwise call thenew layer file the same name as its source filewith a descriptor following the name such asroadscl14pt for 14 point labels on the centerline roads layer.

4.0 FILE NAMING CONVENTIONS

File naming conventions need to be consistent to allow PWT staff to easily find related files forcomparison, integration, or duplicate elimination. Each data source filename should include thedate, (YYYY MM DD), a prefix labeling its general content, a more explicit descriptor, andfinally a suffix that describes version or series information. Typically, do not include project areainformation in the filename, since this will be determined by the directory within which the datais stored.

4.1 PREFIX – CATEGORY

Include one of the following categorical prefixes to classify each data source. If a data source fitstwo categories or falls into a category not yet defined, the contractor should work with PWTpersonnel to create a new or combined class.

ast – above-ground storage tank

BD### – building number to proceed name of environmental samples collected within abuilding

I .,,I( I ~ ~opy

X !iemove

illil - Open Attribute Iable

Joins and Relates ~

~ ;:;_oom To Layer

~isible Scale Range ~

2.election ~

~abel Features

CoC!Jvert Labels to Annotation .. , q Convert Eeatures to Graphics, , , .c,

I Q_ata ~

Save As La:i::_er File .. ,

~ Propert[es, , ,



bh – borehole

blg – building

bnd – boundary

ctr – contours

ele – electrical system features

fnc – fence

gs - gas

gw – groundwater

IA##O – site identifier (such as IA14N), proceeds environmental sample names

ophoto – orthophoto

rd – road

rec – recreation

rr – railroad

sdwk – sidewalk

sol – soil

spot – point elevation

str – stream

sw – surface water

swr – sewer collection system features

stm – storm water collection system features

tel – telecommunication system features

ust – underground storage tank

utl – utility

veg – vegetation

wl - well

wall – wall

wtr – water distribution system features (e.g. domestic water line)

zon – zone

4.2 NAME – DESCRIPTION

Include an abbreviation for the name or identifier for data sources representing a single object,such as a stream (i.e. strMcGulch.shp). Typically do not include project area designators in the



name, since the project directory in which the data source is stored will determine this. Theexception is environmental samples, which should include a site or building designator prefix asdescribed above and a date stamp suffix as described below.

4.3 SUFFIX – SERIES, VERSION, SOURCE

For periodically collected environmental sample data, a suffix should be added to distinguish onedata source from another. For example, for quarterly samples, the year and quarter should beadded as YYQ#, or 02Q1 for the first quarterly sample collected in 2002. For sporadicallycollected samples, a date stamp YYMM should be used, such as 0202 for samples collected inFebruary 2002. For a sample type that will not to be sampled again, no date stamp is neededsince it is already a unique data source.

Do not use words like new and old to describe versions. If existing data must be edited, then adash followed by the edit date should be added to the name to indicate which version it is. Onceall previous versions have been discarded, PWT personnel can decide how to reconcile any editsand drop the date suffix from the final version that results. Dates may be included at thebeginning or end of filenames, based on project conventions, but should be in the format YYYYMM DD to allow files generated during different years to automatically sort in sequential order.

If it is necessary to distinguish a data source developed by an outside entity for public use fromone developed for PWT, a suffix can be added to distinguish the source. For example, USGScould be added to a stream filename to indicate it is a US Geological Survey version of thestream, or LKWD could be appended to the name of files obtained from the City of Lakewood.However, if more than one or two files are going to be used from an outside source, it is better toplace these data sources in their correct location in the directory structure in a subdirectorylabeled with the name of the data provider.

5.0 DIRECTORY STRUCTURE

5.1 BASEWIDE DATA AND MAP DOCUMENTS

All data sources in shapefile format that cover the entire area of the installation or at least largeportions of it or represent a single entity like a stream that traverses the installation should bestored in the Coverages directory. Within the Coverages directory, data sources should be placedin one of the following subdirectories based on their purpose:

Base – base map layers like roads, buildings, etc

Locations – environmental sampling data

IS-CS – environmental site boundaries and area of concern polygons

Offsite – areas adjacent to DFC but not within the boundaries of the compound

Utilities –water, storm water, sewer, electrical, etc.



All map documents should be placed in the Projects directory. Since each ArcView 8 mapdocument (*.mxd) file contains a single map, an abbreviation of the map title and page sizeshould be used to describe it. For example, a basewide utilities map could be calledwtrswrele36x24.mxd to indicate that it contains just water, sewer and electrical utilities (asopposed to all utilities) on a 36 inch wide by 24 inch tall map. If a map contains only sitespecific data, the title of the map should be prefixed with the site number (e.g.IA14N02Q1envchem17x11.mxd).

5.1.1 CAD and Image Files

All data sources stored in Computer-Aided Design (CAD) format should be places in theCadfiles directory. Orthorectified photos should be placed in the Image/Airphoto directory.Pictures or photos of buildings should be placed in the Image/Bldg directory. Maps of projectareas should be placed in the Image/Maps directory. Company logos and other types of imagesshould be placed in the Image/Other directory. Cadfiles or image files that represent buildingsshould be named by their building number and an appropriate descriptive prefix (UTL – utility,Mod – modification, BH – borehole, etc.).

5.1.2 Project-specific Data

Project-specific data should be stored in a directory labeled with its IA or other location identifierwithin the Coverages directory described previously. Within each project directory,subdirectories should be established to organize all spatial data layers (coverages, cadfiles, etc.).To make it easier to load map documents, even project specific ArcView 8 map documents(*.mxd) should still be stored in the Projects subdirectory at the root level.

6.0 DATA DICTIONARY

A simple, but complete data dictionary must be submitted with each spatial data submittal thatbriefly describes each spatial data source included. The data dictionary should be submitted in aneasy-to-read tabular or report format that includes the following headings:

FILENAME – if data files are submitted in more than one directory, include the full path

DESCRIPTION – provide a brief but clear description of content and use

FORMAT – list both the type of data (point, line, polygon, image, grid, drawing, etc.) and the fileformat along with its characteristic extension (e.g. shapefile - *.shp)

DATE CREATED – include the day, month and year the data was generated

7.0 METADATA

7.1 ARCCATALOG-BASED XML FORMAT

Each spatial data source must be accompanied by an ArcView 8-based XML file that describesits content. This file can be automatically generated in part by choosing the data source name



listed in the table of contents in ArcCatalog then selecting the metadata tab. To edit thismetadata file to include other required information:

1. click on the metadata tab

2. choose the edit button

3. click on one of the 7 sections of Federal Geographic Data Committee (FGDC) metadata tobegin modifying

4. click on the tab within the section that describes the type of information you wish to update

5. update information in each field (trying particularly hard to fill in all red lettered sections thatinclude the word REQUIRED at the beginning of the text string)

NOTE: A metadata text file that includes standard sections such as access and use constraints isincluded on the CD that accompanies this document. This can be imported into the metadatausing the Import Metadata button found on the metadata toolbar when the Metadata tab is active.Each contractor can add their contact information and other repetitive data then use the ExportMetadata button to create a more complete, general purpose metadata file. Significant time canbe saved by importing this descriptive information into the metadata for each data source beforeconducting further metadata edits. If this method is followed, it is possible that only the file’spurpose and abstract and specific descriptive information about feature attributes associated withthe map features will still need to be described.

J S tylesheet: IESRI cl ~ ~(}]~~ ====-=-=-=-=--=----=----=--- ~

m Editing 'bonvueshp' 11J X

Identification Data Quality Data Organization Spatial Reference Entity Attribute Distribution Metadata Reference

Gener al I Contact Citation I Time Period ] Status I Spatial Domain I Keywords ] Browse Graphic I Security I Cross Reference I Description ------------------------------------------~

Abstract:

Purpose:

Language:

Supplemental Information:

Access Constraints:

Use Constraints:

Data Set Credit:

REQUIRED : A brief narrative summary of the data set.

REQUIRED : A summary of the intentions with which the data set was developed.

en

REQUIRED: Restrictions and legal prerequisites for accessing the data set.

REQUIRED: Restrictions and legal prerequisites for using the data set after access is gr anted.

Native Data Set Microsoft Windows 2000 Version 5.0 [Build 2195); ESRI ArcCatalog 8.1.0.642 Enwonment:

Native Data SetlSha efile Format: P

.$.ave ,Cancel !::!elp



7.2 SPATIAL REFERENCE INFORMATION MUST BE DEFINED

Once you define the spatial reference information of a data source using the ArcCatalog orArcToolbox method described in an earlier section, ArcView 8 will automatically include this inthe metadata. This is also true of all other information that ArcView 8 can determine from thedata itself, such as extent, feature type and number of features, etc. To view all automaticallyrecalculated metadata entries, review the Spatial tab of the ESRI Stylesheet for the data source ofinterest.

7.3 MINIMUM REQUIREMENTS

The following descriptive information is required for each spatial data source submitted.Including additional information is encouraged to enable the metadata to meet FGDC standardsas well as possible. The three levels of the outline below relate to the ArcView 8 MetadataEditor dialog and indicate the menu, tab or button popup dialog, and finally the actualinformation field that must be completed shown in bold type.

Identification

Description

Abstract, Purpose

Access and Use Constraints

Contact

Person, Organization, Telephone, E-mail, Address

Citation Information

Title, Originator, Publication Date

Spatial Reference (automatically added once defined)

Entity Attribute

Attribute

Label, definition, units (if applicable) for each user-defined attribute field

Metadata Reference

Contact Information

Person (rest not necessary if it is the same as in the identification section)

8.0 MAP DOCUMENT

8.1 THE MAP DOCUMENT (*.mxd)

An ArcView ArcMap map document (*.mxd) will be generated for each map produced for aproject. All map documents should be stored in a Projects directory, either at the root level of



the directory structure for basewide projects, or within a subdirectory labeled with its project area(e.g. IA14N). Metadata should be generated for each map, but only needs to include the purpose,abstract, and complete contact information. Contact information should identify the person whoactually designed the map as well as the project manager. The metadata should indicate if anysymbols or map elements were used that are not found in the PWT map style and if a PWT-approved map template did NOT serve as the basis for the map. This will enable PWT personnelto add new symbols and map elements to the PWT style if necessary and review Layout Vieweffectively to check for product consistency.

9.0 IMPORTING ARCVIEW 3.X PROJECTS INTO ARCVIEW 8

There are two methods for importing Layout and View documents from an ArcView 3.X projectfile (*.apr) into ArcView 8 map documents (*.mxd). Each map document is comprised of asingle map (layout) containing one or more data frames – a data frame in ArcView 8.X isanalogous to a View in ArcView 3.X. An ArcView 3.X project file often contains multiplelayouts, so typically one *.apr is imported into several single-map map documents. If only thedata and symbology is desired, instead of a final map presentation, the user can import selectedViews instead of having Views selected for import automatically based on which Layout is to beimported. ArcView 3.X charts, tables, scripts and dialogs cannot be imported into ArcView 8.Tabular joins and links are also lost during the conversion. Therefore, any themes based on anEvent Theme or relying on joins for symbology or labeling in ArcView 3.X will not appearcorrectly in ArcView 8. Sometimes it may be easier to open an ArcView 3.X and fix it toeliminate dependencies that ArcView 8 will not recognize before proceeding with the importprocess. Data source paths in the *.apr file to import should not be relative (start with a ./) orutilize a variable in the pathname, because only full paths to data sources will be read correctlyby the Import tool. The first step to importing an ArcView 3.X project is to launch the ImportArcView 3.X Project option from the File menu in ArcMap. Browse to the ArcView 3.X projectfile (*.apr) file to be imported. Views and Layouts found in the project will appear in theirrespective lists as soon as an ArcView project file is selected.



9.1 METHOD 1. IMPORTING BY LAYOUT

Choose a Layout from the list of allthe Layouts found in the currentArcView project file toautomatically import it and all of itsassociated Views into an ArcView 8map document (*.mxd). Afterchoosing a layout, the View Selectorwindow will become grayed out andViews associated with the layout willautomatically become check markedfor import. Usually maps will not beconverted perfectly, so review theCorrecting Import Errors sectionbelow.

9.2 METHOD 2. IMPORTING SELECTED VIEWS

Since the approved ArcView 8 maptemplates may differ substantiallyfrom map layouts used in ArcView3.2, in many cases it will bepreferable to import Views byselecting the None option forLayouts to import. Then checkmark the Views needed to constructa single map. Use one of theproject-specific map templates togenerate a new map using theChange Layout button on theLayout toolbar. After adding atemplate, adjust the text and mapelements if necessary to matchimportant features in the originalArcView 3.2 layout.

Import rrom ArcYiew 3.2 Project

Enter or browse for an ArcView project file [.apr)

IC:\gis\00-713DFC\FECGISCD\00-713DFC\FECgis\ia14nwp101501 frelativep ~ 1

Choose which documents to import-----------------,

Layouts [ choose one)

Views:

D Figure 0. base-1 : 4176 ~ Figure 0. Site lnset-1:10916 ~ Figure 1-1. Sample Points-1 : 4325 D Figure 1-1. Sample Points-1 : 4325 DFigure 1-2. Main Sample Points-1 :1205

Import from ArcYiew 3.2 Project

Enter or browse for an ArcView project file [.apr)

OK Cancel

IC:\gis\00-713DFC\FECGISCD\00-713DFC\FECgis\ia14nwp101501 frelativep ~ I - Choose which documents to import----------------,

Layouts ( choose one)

I <None>

Views: ~ Figure 0. base-1 : 4176 ~ Figure 0. Site lnset-1 :10916 ~ Figure 1-1 . Sample Points-1 : 4325 ~ Figure 1-1. Sample Points-1 : 4325 ~ Figure 1-2. Main Sample Points-1 :1 205 ... ...... . ............. ...... ................. ........ ...... ............ . . . - . - .

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OK Cancel



9.3 CORRECTING IMPORT ERRORS

After importing ArcView 3.X information in ArcView 8, it will be necessary to reestablishtabular joins and links and recreate event themes. The graphing tool accessed with theTools>Graphs>Create option can be used to reconstruct any charts that had been present. Clickon the Source tab in the Table of Contents and choose the Add Data button to import tabular datathat had resided in an ArcView 3.X table document. Not all map elements translate correctlyfrom ArcView 3.2 into ArcView 8. Therefore, it important to examine north arrows, scale bars,legends, etc. and replace them with ArcView 8 elements where conversion has not beeneffective. Sometimes text formats may need to be adjusted and neatlines reset, too. If the mapresulting from an imported project is not consistent with approved PWT ArcView 8 maptemplates, map deliverables will NOT be accepted. Therefore, if a contractor’s ArcView 3.2layouts differ more than slightly from PWT ArcView 8 standards, it is better to import Viewsonly and use an approved PWT map template to reconstruct the map.

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ATTACHMENT A

U.S. EPA Region 8 GIS Deliverable Guidance



U.S. EPA Region 8 GIS Deliverable Guidance

Re9ion 8 Ecosystems Protection and Remediation

Program Support

Dato Systems Team

GfS

Version1.1

June 1, 2015

Page l of 6



Document Revision History

Date Author Version Description 1/6/2014 John Wieber 1.0 Final

6/1/2015 John Wieber 1.1 Final

Contacts

Name Role/Org Telephone Email John Wieber GIS Lead (303) 312-6118 [email protected]

Page 2 of 6



Contents Purpose ....................... .... ...... ... ..... ....... ........ ....... .. ... .......... .. ... ......... ... ....... ...... .. ....... ....... .......... ... .... ... .. ... .... 3

Scope ............... ... ... .... .. ... .... .... .... ......... ... ...... ................ ........ ... .... ... .. .......... ..... ... ...... ............. ..... ... .... .. ...... ... . 3

Responsibilities ......... ... ..... ......... .................. ............... .... .. ..................... .... .. .... .......................... ................... 3

Introduction .... .................. ..... ..... ...... ... .. ...... ....... .. .. ...... .. .. ... .......... .. .......... ..... ... ...... ... ...... ....... .. ... ....... .. .... ... 4

GIS Formatted Data Files ......... ............... ..... ... ... .... .. ............. .. .... .. ...... ....... .. .... ........................... .. .... ... .. ... .... 4

Projection Requirements ... .. ................ .. ...... .... .. .... ... .... .. ..... ... .... ... ........... ...... ... ...... ... ...................... ... .. ... , ... 5

Metadata Requirements ....... ... .. ....... .. ... ...... ......... .......... .. ... ... ...... ... ... .... .. ................ .................. .. ... ......... .... S

Organizationa l Requirements .... ........................ ... ...... ................ ..... ... ....... ...... .. ......... ...... .... ..... ...... .... .. ... ... . S

Delivery Requirements .................. .... ........... ................ ...... .. .. ..... .. ...... .... ......... .. ....... .. .......... ...... ..... .... ..... .... 6

EPA Acceptable Data Formats .... ... .... .......... ....... .................................. ...... ...................... ............................. 6

Purpose The purpose of this document is to provide guidance to contractors, grantees, or others who provide GIS

deliverables to EPA Region 8 programs, projects, or sta ff.

Scope This document covers the types of GIS deliverables antic ipated in Region .8 and how the Region would

like to receive these deliverables. Additionally, data standards, formats, and best management practices

are identified.

Responsibilities The Region 8 GIS team is responsible for maintaining this document and providing it to those parties

wishing to provide Region 8 wi th spatial data or products. It is the responsibili ty of those providing

deliverables to the Region to adhere to the guidance provided in this document to the best of their

abilities. The Region 8 GIS team relies on other EPA staff such as grant/contracting officers, RPMs, and

inspectors to ensure data are getting submitted for long-term use at EPA.

Page 3 of 6



Introduction

This document is intended to specify GIS file delivery formats for all geospatia l materials developed in support of GIS rela ted work within EPA Region 8. It is the intent of EPA Region 8 to acquire, ca talog and manage all GIS files comprehensively across all projects to:

1) ensure future use and access to EPA, 2) provide an archive of work accomplished, 3) maintain and serve data tha t spatially represent features pertinent to on-going EPA efforts, and 4) provide a basis for fu ture activities such as CERCLA Five Year Review.

GIS Formatted Data Files

All final version spatially enabled files acquired or developed to support mapping and/or spatia l ana lysis by a contractor or grantee are considered property of the EPA and are required to be subm itted to EPA. Delivery schedules are negotiable, but should be annual at a minimum. This includes but is not lim ited to all GIS, CAD, and image formatted files used to develop maps for any scoping or decision document developed for EPA, as well as any spatial file used to inform a decision on site ma nagement or development. Only final versions of each layer are required for delivery to EPA, and must be in an approved format as spedfied in this document. In addition, all electronic geospatial data, whether vector or raster, must be projection defined (have a projection defined and embedded in or associated with t he data file), and in the case of CAD data must NOT be in page space or a custom site-specific projection. All CAD data must be in known real world coordinate space, ideally conforming to the projection specifications outlined below. Should tabular data be appropriate to connect location information with attribute information, then documentation specifying the primary and foreign keys is required. Should coordinate information be provided in tabular format it should contain at minimum the following fields:

ID - a unique identifier given to each feature Latitude -the Y coordinate in decimal degrees, 6 significant digits Longitude - the X coordinate in decimal degrees, 6 significant digits Horizontal Datum - the datum of the coordinates.

Additionally all static maps that appear in an EPA document should be in an electronic Adobe PDF format with fonts embedded and at a resolution of 300 dots per inch (dpi) or greater. Finally, any dynamic maps used in final map production, such as ESRI ArcMap documents (.mxd), may also required for delivery to EPA with accompanying data in a stand-alone directory structure. Such documents are recommended to be provided as ESRI map packages (.mpk).

Page 4 of 6



Projection Requirements

All GIS fi les submitted to EPA must have spatial refe rence information that describes the projection, da tum, and where applicable the collection methods. The EPA requests that all vector data be submitted in geographic coordinate system, decimal degree units, and NAD83 datum, as is requ ired under the EPA National Geospatial Data Policy, 2008. Raster data , such as aerial photographs may be submitted in their native projection, and maps should be in the appropriate projection/coordinate system for the area depicted. EPA Region 8 GIS staff will be happy to consult and advise on projection, coordinate, and datum details for submission to EPA.

Metadata Requirements

All GIS fi les developed for EPA are required by Executive Order 12906 to have associated metadata. EPA requ ires FGDC compliant metadata on all GIS files deve loped for site support. Region 8 also requires tha t a ll dynamic maps (ArcMap documents) have metadata completed. The Content Standard for Digita l Geospat ial Metadata can be found at www.fgdc.gov. Metadata, including info rmation about the data 's projection, can be developed using one of several bu il t-in or add on tools wi t hin a GIS, and typically is associated with the geometry file as an XML file. EPA Region 8 GIS staff will be happy to consult and advise on development of required metadata.

Organizational Requirements

If the project is complex, a directory structure and readme text file in the upper level directory that describes the structure is required. Because EPA will be managing data across many projects, it is important to make your submittals as understandable as possible. A recommended directory structure is as follows:

<Project_Name> I_ Docs (reports, SOPs, correspondence, and other such documents) I_ Maps (MXDs and PDFs. Map names should use the project name as a prefix) I_ Rasters (aerial photos, satellite imagery, logos, DE Ms, and other raster type data) I_ Source (original unmodified data that may have been acquired from external/internal sources) I_ Tables (MS-Access databases, spreadsheets, delimited text files, or other such tabular data not stored in a geodatabase) I_ Vectors (geodatabases, shape files, and other approved vector data formats)

File naming conventions should be logical, consistent, and contain no spaces or special characters. An underscore may be used in lieu of a space .

Page 5 of 6



Delivery Requirements

EPA will accept data delivered on CD-Rom, DVD, or external hard drive, as well as direct electronic submission via email or FTP site. Other del ivery methods may be allowed if those requirements present a significant burden or as technology changes.

EPA Acceptable Data Formats

The following file formats are considered acceptable and all maps and data must include an associated metadata document:

DATA Vector - projected to geographic, decimal degrees, NAD83

File Geodatabase (.gdb) *Preferred Shape File (.shp, .shx, .dbf, .prj, .sbx, .sbn) Personal Geodatabase (.mdb) ESRI Map Package (.mpk)

Raster- native projection acceptable

TIFF image with world reference file or as a GeoTIFF (.tif, .tfw)

JPEG image with world reference file (.jpg, .jpw)

ERDAS Imagine image with pyramid file (.img, .rrd) MrSid image (.sid)

ESRI Grid DEM

TINs - appropriate projection/coordinate system for the area depicted

ESRI TIN

CAD - projected to geographic, decimal degrees, NAD83

DXF layer separates (.dxf)

Tabular -primary keys should be dearly identified/documented

MS-Access database (.mdb)

MS-Excel spreadsheet (.xlsx)

Delimited text file (.txt, .csv)

MAPS Static

Adobe PDF at 300 dpi or better with embedded fonts (.pdf)

Dynamic ESRI Map Package (.mpk)

FGDC Compliant METADATA XML (.xml)

Page 6 of 6


SAMPLE HANDLING Procedure No. PWT-ENSE-406Revision 2

Date effective: 03/01/12APPROVED: /s/ Page i of 6

PWT Project Manager Date

TABLE OF CONTENTS

Section Page No.TABLE OF CONTENTS ............................................................................................................................. i

List of Attachments........................................................................................................................................ i


2.0 REQUIREMENTS............................................................................................................................ 1

3.0 MATERIALS AND EQUIPMENT.................................................................................................. 1

4.0 PROCEDURES................................................................................................................................. 2

4.1 Sample Identification .................................................................................................................... 2

4.2 Sample Labeling ........................................................................................................................... 2

4.3 Sample Handling........................................................................................................................... 2

4.3.1 Sample Containers ................................................................................................................ 2

4.3.2 Sample Preservation.............................................................................................................. 2

4.3.3 Sample Handling and Shipping............................................................................................. 3

4.3.4 Sample Container Tampering ............................................................................................... 4

4.3.5 Holding Times and Analyses ................................................................................................ 4

5.0 DOCUMENTATION ....................................................................................................................... 4

5.1 Sample Management Logbook ..................................................................................................... 4

5.2 Chain of Custody .......................................................................................................................... 5

List of Attachments

Attachment A Example Chain of Custody Form

Attachment B Example Custody Seal

REVISION LOG


1.0 Original SOP July 2011

2.0 QA Review and Update March 2012


SAMPLE HANDLING Procedure No. PWT-ENSE-406Revision 2

Date effective: 03/01/12APPROVED: /s/ Page ii of 6

PWT Project Manager Date

ANNUAL REVIEW LOG



2.0 Annual QA Review November 2014


2.0 Annual QA Review October 2016

SAMPLE HANDLINGProcedure No. PWT-ENSE-406



This Standard Operating Procedure (SOP) provides technical guidance and methods that will be used tohandle environmental samples (such as: soil, groundwater, surface water, sediment, waste, and airsamples) during environmental investigations. This SOP serves as a supplement to site-wide andinvestigation area specific workplans and the site-specific Quality Assurance Project Plan (QAPP) and maybe used in conjunction with other SOPs.

2.0 REQUIREMENTS

The following sections identify the requirements for Quality Assurance / Quality Control (QA/QC),health and safety, and personnel qualifications for sample handling.


Follow all QA/QC requirements identified for the project as identified in approved project planningdocument(s).


Follow health and safety requirements identified in the Site-Specific Health and Safety Plan, Job SafetyAnalyses (JSAs), any applicable Task-Specific Health and Safety Plans prepared by PWT Subcontractors,and the associated Activity Hazard Analyses (AHAs).


Personnel performing sample handling activities will have knowledge and experience in the equipmentand procedures used, or will work under the direct field supervision of knowledgeable and experiencedpersonnel. Sample handling will be directed by a PWT field sample manager responsible for ensuringproper handling and shipment of samples. The field sample manager will be knowledgeable andexperienced in handling and shipping of environmental samples.


The following materials and equipment may be needed for sample handling, packaging, and shipping:

Monitoring equipment and personal protective equipment (PPE) as specified in the HASP.

Appropriate clean sample containers as specified for each analytical method being tested. Samplecontainers will contain appropriate preservatives, according to method specifications. Samplecontainers will be provided by the analytical laboratory, unless otherwise specified in the QAPP.

Decontamination equipment and supplies (e.g., wash/rinse tubs, brushes, Alconox, plasticsheeting, paper towels, sponges, baby wipes, garden-type water sprayers, large plastic bags,potable water, distilled water and/or deionized water).

Sample handling supplies (e.g., recloseable plastic bags, waterproof markers and sample labels,cooler for sample storage, ice or ice substitute).

Sample management supplies (e.g., soil sample field data sheets, chain-of-custody [COC] forms).An example COC form is included as Attachment A.

Sample shipping supplies (shipping coolers, recloseable plastic bags, shipping labels, shippingforms [provided by shipping courier], bubble wrap, tape [e.g., clear tape, packing tape, andcustody seal tape]).



Other materials and equipment may be needed based on field conditions.

4.0 PROCEDURES

4.1 Sample Identification

Samples collected during investigation activities will be identified using a pre-determined sampleidentification (ID) scheme described in the project or investigation –specific sampling plan.

Typically, sample ID numbers consist of two main components:

The investigation location site identifier, which may include numbers, letters, or a combination ofthe two, and which corresponds to the investigation location at which the sample was collected.

Sample-specific information, such as the sample collection method, sample depth interval, sampletype and sequential sample number

4.2 Sample Labeling

Sample labels will be filled out to the extent possible before field sampling activities begin. However, thedate, time, sample depth, and sampler's initials or signature will typically not be completed until the timeof sample collection. Sample labels will be filled out using waterproof ink. At a minimum, each labelwill contain the following information:

Company’s name

Project name/site location

Sample ID

Date and time of sample collection

Method of preservation (if any) used

Analyses required

Sample matrix (e.g., soil, water)

Sampler initials

4.3 Sample Handling

This section discusses proper sample containers, preservatives, and handling and shipping procedures.

4.3.1 Sample Containers

Unless otherwise specified in the QAPP, clean sample containers will be obtained from the subcontractedanalytical laboratory performing the analyses. Extra containers will be ordered to account for thepossibility of breakage during shipment or sample collection. To the extent possible, requiredpreservatives will be prepared and placed in the bottles at the laboratory before shipment to the site.Project-specific sample containers will be identified in the site-specific QAPP.

4.3.2 Sample Preservation

Samples will be preserved in accordance with the site-specific QAPP. Chemical preservatives, ifnecessary, will be added to the sample containers by the laboratory (or vendor) before shipment to thefield. Samples will be stored at appropriate temperatures as specified in the site-specific QAPP.



4.3.3 Sample Handling and Shipping

Sample containers will be packaged properly to prevent breakage of containers and leakage of contents.The following procedures will be followed during the packaging and shipping process:

1. Place sample containers in recloseable plastic bags.2. If sample container is glass, wrap individual sample containers with bubble wrap.3. Place sufficient amounts of bubble wrap in the bottom and sides of the shipping cooler to prevent

movement of contents.4. Add enough ice (in double bags) or ice substitute to the cooler to maintain proper preservation

temperature in accordance with the QAPP.5. Line the inside of the cooler with a plastic trash bag, place the samples and additional ice as

necessary inside, and tie the bag shut.6. Fill any void space in the cooler with packing material (e.g., bubble wrap) to prevent movement

of sample containers.7. Place the original COC form inside a recloseable plastic bag, and tape the bag to the inside of the

cooler lid.8. Close the cooler lid, and seal the cooler and the cooler drain spout with appropriate packaging

tape.9. Place two custody seals (tampering seals) on the cooler in separate areas over (across) the seal

between the lid and the cooler base. Example custody seals are included as Attachment B.

A shipping bill should be completed for the shipper and taped to the top of the cooler using the envelopeprovided by the shipper. The following markings may also be placed on the top of the cooler:

This end up

Fragile

Laboratory delivery address

Sender's return address

A copy of the shipping bill will be retained by the field sample manager for attachment to thecorresponding COC form. Samples will be hand delivered or shipped by express courier for delivery tothe analytical laboratory.

The field sample manager or field team leader is responsible for verifying that samples collected by thefield team(s) have been properly identified, preserved, and packaged, and for verifying the accuracy andcompleteness of sample labels, COC forms, and applicable sample field data sheets and logbook entries.

The following is a summary of steps to be performed by the field sample manager:

Verify sample labels.

Verify samples were collected and preserved in accordance with the site-specific FSP and QAPP.

Check or complete the COC form, photocopy, and retain a copy for the project files.

Pack samples in shipping containers and verify labels and shipping forms meet shippingrequirements.

Send original COC form to the laboratory.

Retain a copy of the shipping bill and staple it to the corresponding COC copy.

Send copies of sample field data sheets and photocopied pages of field logbooks to the projectmanager.



Close coordination will be maintained between the field sample manager and the analytical laboratoryduring sample collection and shipment. The laboratory will be instructed to report any handling orpreservation issues immediately to the field sample manager (or other designated person) so thatcorrections can be made to field procedures, if necessary.

4.3.4 Sample Container Tampering

If, at any time after samples have been secured, custody seals on the cooler are identified as having beentampered with, the following procedures will be conducted to ensure that sample integrity has not beencompromised:

Check with personnel having access to sample coolers to assess the possibility of inadvertentbreakage of custody seals.

Inspect sample containers for signs of tampering, such as loose lids, foreign objects in containers,or broken or leaking containers.

Review sample packaging and handling procedures.

Document findings of the incident in the sample management logbook.

If it is determined that intentional tampering of samples has occurred, or it is believed that sampleintegrity has been compromised in any way, the Quality Assurance Officer and appropriate projectmanagers will be notified.

4.3.5 Holding Times and Analyses

Samples will be shipped to the analytical laboratory for analysis as soon as practical following collection.At a minimum, samples will be shipped daily with the following exception. For small projects, samplesmay be collected over a period of several days at the discretion of the project managers, and thencollectively shipped. No samples will be shipped on Friday for weekend delivery unless receipt andanalysis procedures are pre-coordinated with the analytical laboratory. Allowable holding times forspecific samples will be specified in the site-specific QAPP.

5.0 DOCUMENTATION

Documentation of sample handling is critical to project defensibility. The field sample manager will beresponsible for ensuring all sample collection and handling documentation is complete and accurate.

5.1 Sample Management Logbook

The field sample manager will maintain a complete and accurate sample management logbookdocumenting sample handling procedures and observations. The logbook will be a permanently boundweatherproof field logbook with consecutively numbered pages. The field sample manager will alsomaintain a complete and accurate sample management file containing copies of all sample field datasheets, sampling crew logbooks, COC forms, shipping documentation, and written logs ofcorrespondence or communications with the laboratory and other pertinent correspondence andcommunications. The sample management logbook will contain sufficiently detailed information toallow all significant sampling issues to be reconstructed without relying on the memory of samplingpersonnel.

The sample management logbook will contain daily entries for the following information:

Project name



Sampling activities performed that day

Sampling crews and affiliations

Sample location identifications

List of samples collected, including sample IDs, collection time/date, media, analysis methods,and associated COC and shipping documentation.

QA/QC samples collected and submitted for analysis

Field observations

Instrument calibration information

Correspondence and communications

Field sample manager’s signature

Changes or deletions in the logbook will be lined out with a single strike mark, initialed and dated by theperson making the change. Sufficient information should be recorded to allow the reason for the changeto be reconstructed without relying on the memory of field personnel.

At the end of each day, the field sample manager will prepare copies of the sample management logbook,sample field data sheets, and field crew logbooks for the project manager. The field sample manager willcoordinate with the project manager on the required frequency of transmittal of this information to theclient. The client will expect this information to be available, accurate, and complete on a daily basis forpossible inspection by the client, quality assurance personnel, the project manager or the regulatoryagency.

5.2 Chain of Custody

Written documentation of the proper and secure handling of samples from the time samples are collecteduntil laboratory data are issued is critical to project defensibility. The chain of custody of the physicalsample and its corresponding documentation will be maintained throughout the handling of the sample.Sample custody applies to both the field and laboratory operations. Information on the custody, transfer,handling, and shipping of samples will be recorded on a COC form. An example COC form is providedas Attachment A. The COC form may consist of a triplicate, pressure-sensitive form or other formprepared by the contract laboratory, or the COC form may be electronically generated in the SCRIBEsoftware. The COC form may vary depending on investigation activities. The investigation contractorwill select an appropriate COC form subject to approval by the client.

A sample is under custody if it is in:

The possession of the sampler/analyst.

The view, after being in the possession, of the sampler/analyst.

A sealed shipping container being carried by a designated commercial carrier.

A designated secure area.

The sampling team will be responsible for initiating the original COC form and will sign and date theCOC form when relinquishing sample custody to another person (e.g., the field sample manager) or to theanalytical laboratory. The COC form and sample labels will be checked by the field sample manager toverify that samples are accounted for and in good condition, and that no errors were made.

The COC form will include the following information:



COC number (unique, sequential number on the upper right corner of the form)

Project name and number

Sample ID number

Sample preservatives

Number of containers

Sample collection date and time

Sample matrix

Requested analyses

Signature and date blocks for personnel relinquishing or receiving sample custody

Name and phone number of contractor contact person

Transfer of samples to the analytical laboratory may be via commercial carrier. The field samplemanager will verify the proper packaging and shipment of samples. Prior to shipping, the field samplemanager will officially transfer sample custody to the commercial carrier or analytical laboratory andsecure the COC form inside the shipping container. Shipping containers transferred via commercialcarrier will be sealed with strapping tape and with two custody seals. An example custody seal format isprovided as Attachment B. Receipts of bills of lading from the carrier will be maintained as part of thecustody record. Commercial carriers are not required to sign the COC form as long as the COC form issealed inside the shipping container and the custody seals remain intact.

Upon receipt at the laboratory, the person receiving the samples will sign the COC form acceptingtransfer of custody to the laboratory. The laboratory will return a copy of the signed COC form to thedesignated investigation contractor personnel (i.e., project chemist, field sample manager, or projectmanager), and will retain a copy on file at the laboratory. The original COC form will remain with thesamples until final disposition of the samples by the laboratory in accordance with the site-specificQAPP. After sample disposal, a copy of the original COC will be sent by the analytical laboratory to theinvestigation contractor.

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PWT STANDARD OPERATING PROCEDUREUTILITY CLEARANCE Procedure No. PWT-ENSE-413



TABLE OF CONTENTS

Section Page No.TABLE OF CONTENTS................................................................................................................................ i

1.0 PURPOSE......................................................................................................................................... 1

2.0 REQUIREMENTS............................................................................................................................ 1

3.0 RESPONSIBLE PERSONNEL ........................................................................................................ 1

4.0 PROCEDURES................................................................................................................................. 1

5.0 DOCUMENTATION ....................................................................................................................... 2

REVISION LOG





ANNUAL REVIEW LOG





I

UTILITY CLEARANCEProcedure No. PWT-ENSE-413


1.0 PURPOSE

This Standard Operating Procedure (SOP) provides technical guidance and procedures for utilityclearances at project sites. This SOP serves as a supplement to site-wide and investigation area specificworkplans and the site-specific Quality Assurance Project Plan (QAPP) and is intended to be used inconjunction with other SOPs.

2.0 REQUIREMENTS

2.1 Quality Assurance / Quality Control

Follow all QA/QC requirements identified for the project as identified in the approved project planningdocument(s).


Follow health and safety requirements identified in the Site-Specific Health and Safety Plan (HASP), JobSafety Analyses, any applicable Task-Specific HASPs prepared by PWT Subcontractors, and theassociated Activity Hazard Analyses.

3.0 RESPONSIBLE PERSONNEL

The project manager has the overall responsibility for implementing this SOP. The project manager willbe responsible for assigning staff to implement this SOP and for ensuring that the procedures are followedby all personnel. The field team leader is responsible for ensuring that the appropriate utility clearanceshave been performed prior to any intrusive field activities. All utility clearances will comply withapplicable portions of the Site-Specific HASP.

4.0 PROCEDURES

Locations selected for intrusive field activities (e.g. borehole drilling, surface or shallow subsurface soilsampling, trenching) will be cleared of utilities before field activities begin. Utilities may be locatedbelow ground or above ground. Before intrusive field activities can be performed each location will becleared for the following utilities; natural gas, telecommunications, water and sewer, electrical, fiberoptics and cable. At some locations additional utilities that may require clearance include petroleumservice lines, irrigation lines, and building foundations.

Locations selected for intrusive work must be visually cleared for overhead utilities by the projectmanager or designee. This overhead utility check shall be recorded in the field logbook. Location ofunderground utilities will require additional steps, as described below.

It is the responsibility of the project manager to contact utility organizations directly for utility clearanceat least one week in advance of scheduled intrusive work. Some utility companies guarantee that theywill be present at the scheduled meet time. Other utility companies may call to reschedule at a differenttime or to reschedule the day of the scheduled utility meet. If possible, the utility clearance should bedone 3 to 5 days prior to intrusive work to allow enough time for utilities companies to clear their lines.Because utility markings may be disturbed or fade, performing utility clearance more than 2 weeks in

UTILITY CLEARANCEProcedure No. PWT-ENSE-413


advance of field activities is not recommended. The utility companies will identify their utilities withspray paint on the ground and or pin flags. They also may leave a map or sketch at the location with theirlines identified. In addition to the project manager (or designee), each subcontractor performing theactual intrusive work is required to provide a representative to attend the utility clearance, to pose anynecessary questions. The subcontractors should request the same meet time that the PWT projectmanager has set up.

5.0 DOCUMENTATION

Underground and overhead utility clearance activities will be documented in the field logbook by theproject manager, field team leader or rig geologist. The documentation will include the utility locatorservice sign-off, personnel present for the utility locate, the final project-site representative approval (ifrequested), and any current and historical maps used in locating utilities (or references to locations ofmaps for future reference).

PWT STANDARD OPERATING PROCEDUREINVESTIGATION DERIVED WASTE MANAGEMENT Procedure No. PWT-ENSE-423



TABLE OF CONTENTS

Section Page No.TABLE OF CONTENTS ............................................................................................................................ i

List of Attachments...................................................................................................................... i1.0 PURPOSE ........................................................................................................................................... 12.0 REQUIREMENTS............................................................................................................................. 1

2.1 Quality Assurance / Quality Control................................................................................... 12.2 Health and Safety................................................................................................................ 12.3 Personnel Qualifications ..................................................................................................... 1

3.0 MATERIALS AND EQUIPMENT .................................................................................................. 14.0 PROCEDURES .................................................................................................................................. 2

4.1 Non Liquid IDW ................................................................................................................. 24.1.1 Soil IDW ..................................................................................................................... 24.1.2 Excavated Soil from Trenches .................................................................................... 34.1.3 Construction Debris and Landfill Material ................................................................. 44.1.4 PPE and Disposable Investigation Equipment............................................................ 4

4.2 Liquid IDW ......................................................................................................................... 45.0 DOCUMENTATION......................................................................................................................... 5

List of Attachments

Attachment A Waste Inventory Tracking Form

Attachment B Maximum Concentration of Contaminants for the Toxicity Characteristic

REVISION LOG


0.0 Original SOP No. GW.105 January 2012



ANNUAL REVIEW LOG

RevisionReviewed

Description Date




INVESTIGATION DERIVED WASTE MANAGEMENTProcedure No. PWT-ENSE-423


1.0 PURPOSE

This Standard Operating Procedure (SOP) provides technical guidance and methods that will be used for thehandling, management, and disposal of investigation derived waste (IDW) encountered or generatedduring environmental field activities. This SOP serves as a supplement to the site-specific QAPP and otherapproved project planning documents, and is intended to be used in conjunction with other activity-specificSOPs. IDW management personnel are also referred to Management of Investigation-Derived WastesDuring Site Inspections (EPA 1991), Guide to Management of Investigation-Derived Wastes (EPA 1992)and applicable state and federal requirements.

2.0 REQUIREMENTS

The following sections identify the requirements for Quality Assurance / Quality Control (QA/QC),health and safety, and personnel qualifications for IDW management.

2.1 Quality Assurance / Quality Control

Follow all QA/QC requirements identified for the project as identified in the site-specific QAPP and

other approved project planning document(s).




Personnel overseeing the handling and disposal of IDW will have IDW management knowledge andexperience, or will work under the direct field supervision of knowledgeable and experienced personnel.


The following materials and equipment may be needed for IDW management:

Personal protective equipment (PPE) as outlined in the HASP

Decontamination equipment and supplies (e.g., wash/rinse tubs, brushes, alconox, plastic sheeting,paper towels, sponges, baby wipes, garden-type water sprayers, large plastic bags (minimum 0.85 mil),potable water, distilled water and/or deionized water)

Department of Transportation (DOT)-rated 55-gallon drums or other approved containers for containingsoil cuttings, decontamination water, and formation water

Drum/bung wrench and drum funnel

Heavy equipment forklift or vehicle with drum grappler

Laboratory-supplied sample containers

Photoionization detector (PID) or flame ionization detector (FID)

Wood pallets



Non-porous (e.g., stainless steel) shovels

Hazardous Waste Labels

Soil roll-off bins with liners and covers (if warranted)

Polyethylene tank (if warranted)

Waterproof and permanent marking pens

4.0 PROCEDURES

Environmental field activities may generate IDW that poses a risk to human health and the environment.It is anticipated that both non-liquid and liquid IDW will be generated or encountered duringenvironmental field activities.

Non-liquid IDW may include:

Drill cuttings from soil borings

Sludges (from soil borings in the saturated zone and from development water)

Excavated soil from trenches

Construction debris (e.g., concrete and asphalt)

Buried landfill materials (e.g., burned wood, desks, and metal objects)

PPE

Disposable investigation equipment (i.e., bailers, twine, discarded sample bottles, preservativecontainers, paper towels, aluminum foil)

Empty drums

Liquid IDW may include:

Well development water

Purge water (from monitor wells)

Well abandonment water

Decontamination water

4.1 Non Liquid IDW

4.1.1 Soil IDW

Soil cuttings generated during drilling and soil sampling will be placed into DOT-rated 55-gallondrums, or appropriately sized containers at the point of generation.

Mixing of the cuttings from several borings or sampling locations is permissible in order to fill thedrums. Consult with the PWT Project Manager to see if certain borings should or should not becombined. For example, borings from known areas of greater contamination might be mixed while



segregating cuttings from a boring installed in an upgradient area. The splitting of cuttings from oneboring into several drums should generally be avoided.

When drums are full, or daily activities are completed, the drum lids and rings will be fastened. Fulldrums will be transported to a designated IDW accumulation area on a regular basis to avoidaccumulation of drums at investigation sites for extended periods of time. Alternative temporary IDWaccumulation areas can be used as specified in the investigation-specific work plan.

If large volumes of soil IDW will be generated, soil IDW may be transferred from the drums into roll-off bins (lined and covered) located within the designated IDW accumulation area.

If only a small volume of soil IDW will be generated, DOT-rated 55-gallon drums can be used for thetemporary storage of soil IDW pending analysis. Drums will be stored on pallets at the designated IDWaccumulation area. Drums from individual sites will be segregated from each other as much as possible.The drums will be sealed and labeled with permanent markings (using paint pens or drum labels) withthe following information:

1. Source: the boring(s), well, or site identification number

2. Matrix (e.g., soil, water)

3. Sample interval (e.g., 0–20 ft or well screen depth) (multiple drums of development or purgewater will be numbered consecutively as they are filled)

4. Fill date

5. Drum identification number

6. Contractor

7. The EPA or PWT designee point of contact with phone number

8. "Contents Pending Analysis"

Soil IDW in drums will typically be characterized and disposed of based on the characterization ofassociated investigation sample results (if collected and analyzed).

If no associated investigation sample results exist, a composite soil sample will be collected from the soilIDW drums by collecting a drive or hand auger sample from each of the drums associated with a specificfield activity. The sample material from all of the drums will be composited into a single sample thatwill be used to characterized and dispose of the soil IDW.

4.1.2 Excavated Soil from Trenches

Most trenching operations will generate substantial volumes of excavated soil.

Large volumes of excavated soil IDW will be placed directly into roll-off bins (lined and covered) at theexcavation site. This procedure will minimize concerns resulting from stock piling the soil IDW, such aswind dispersion and contamination of the ground surface.

Small volumes of excavated soil can be placed in drums at the excavation site. Drums will belabeled and stored as described in Section 4.1.1.

Soil IDW in drums will be sampled (if warranted), characterized, and disposed of as described inSection 4.1.1 above.



Soil IDW placed on the ground surface prior to placement into drums or roll-off bins, must be placed onplastic sheeting covering the ground surface. The soil IDW must be transferred to drums or roll-off binsbefore completion of the days activities.

4.1.3 Construction Debris and Landfill Material

Small pieces of construction debris or landfill materials may be placed in the soil IDW roll-off binsor drums. For example, small amounts of wood, concrete, rebar, and paper do not requiresegregation from the soil IDW.

Large volumes of the materials listed above, and large objects, such as desks or large metal objects,will be segregated separately from the soil IDW.

If the associated soil IDW is characterized as nonhazardous, these materials can be disposed of asnonhazardous solid waste.

If the associated soil IDW is characterized as hazardous, potential surface contamination will beremoved from the large objects with nonporous surfaces by brushing off, or using small amountsof water to scrub off, gross potential contamination. After decontamination, these objects can bedisposed of as nonhazardous solid waste.

If the associated soil IDW is characterized as hazardous, large objects with porous surfaces mayrequire disposal as hazardous waste. Consult the PWT Project Manager and the IDW disposalcontractor.

Containers that may contain or potentially contained controlled substances (e.g., paint cans, drums)will be segregated from the materials described above and placed in appropriately sized containers.

Consult the IDW disposal contractor for the appropriate disposal requirements for thesematerials.

4.1.4 PPE and Disposable Investigation Equipment

PPE and disposable investigation equipment will be segregated separately and placed in dedicatedheavy duty (minimum 0.85 mil) plastic bags or containers (e.g., drums).

Potentially contaminated PPE or disposable investigation equipment will be decontaminated prior toplacement in the plastic bags or containers, if warranted.

Decontamination procedures consist of brushing off, or using small amounts of water to scrub off,gross potential contamination.

PPE and disposable investigation equipment that have been decontaminated, if warranted, areconsidered refuse and do not require characterization prior to disposal as nonhazardous solid waste.

4.2 Liquid IDW

Well development, purge, abandonment, and decontamination water will be contained in DOT-rateddrums, or appropriately sized water-tight containers, at the point of generation. When drums are full, ordaily activities are completed, the drum lids and rings will be fastened, and the drums will betransported to the designated temporary IDW accumulation area as described in Section 4.2 ofAttachment B. Alternative temporary IDW accumulation areas can be used as specified in the site-specific QAPP.



If large volumes of water will be generated, the water will be transferred into an appropriately sizedpolyethylene tank. The liquid IDW in the polyethylene tank will be characterized based on theanalytical results of the well or wells sampled, or from a representative grab sample collected fromthe tank. The sample will be collected using a colliwasa, disposable point source bailer, or bombsampler for discrete interval sampling within the polyethylene tank.

After analytical data for the liquid IDW are obtained from the laboratory, the data will be directlycompared to the hazardous waste concentrations presented in Table 1 in 40 CFR §261.24(Attachment B). The liquid IDW will then be removed, and treated and disposed of by a certifiedhazardous waste contractor in accordance with the applicable waste characterization (Section 5.0).

If only a small volume of water IDW will be generated, DOT-rated 55-gallon drums can be used for thetemporary storage of water IDW pending analysis. Water IDW drums will be labeled and stored asdescribed in Section 1.1.1, Soil IDW above.

Water IDW in drums will be characterized and disposed of based on the characterization ofassociated investigation sample results (if collected and analyzed).

If no associated investigation sample results exist, a composite water sample will be collected fromeach of the water IDW drums associated with a specific field activity. The sample will be used tocharacterize and dispose of the water IDW.

The list of chemicals to be analyzed for is the same as the list for soil characterization (AttachmentB).

5.0 DOCUMENTATION

Project staff are responsible for thoroughly documenting IDW handling and disposal activities. IDWpersonnel will be responsible for documenting the collection, transportation, labeling (if applicable), andstaging or disposition of IDW. The documentation will be recorded with waterproof ink on a WasteInventory Tracking Form (Attachment A) or in the sampler's field notebook with consecutively numberedpages. The information entered concerning IDW should include the following:

Project Name

PWT and subcontractor personnel

Site location

Type of activities

Date waste generated

Boring, well, or site number(s)

Matrix

Type of container(s) and identification number(s)

Estimated volume

Disposition of contents (roll-off/location, tank/location, temporary staging area)

Waste characterization

Comments (field evidence of contamination [e.g., PID reading, odors])

ATTACHMENT A

Waste Inventory Tracking Form

SOP NUMBER: PWT-ENSE-WM-423 INVESTIGATION DERIVED WASTE MANAGEMENT

WASTE INVENTORY TRACKING FORM

Project Name:

PWT and Subcontractor Personnel:

Site Location:

Type of Activities:

Date WasteGenerated

Borehole, Well,or Site # Matrix

Type ofContainer (Plus

ID#, ifapplicable)

EstimatedVolume

Disposition ofContents

WasteCharacterization

Comments(Field Evidence of Contamination

[e.g., PID reading, odors])

Signature:

ATTACHMENT B

Maximum Concentration of Contaminants for the Toxicity Characteristic

Maximum Concentration of Contaminants for the Toxicity Characteristic Leaching Procedure(TCLP)

EPA HazardousWaste Number Contaminant

TCLP Regulatory Level(mg/L)

D004 Arsenic 5.0D005 Barium 100.0D018 Benzene 0.5D006 Cadmium 1.0D019 Carbon tetrachloride 0.5D020 Chlordane 0.03D021 Chlorobenzene 100.0D022 Chloroform 6.0D007 Chromium 5.0D023 o-Cresol (1) 200.0D024 m-Cresol (1) 200.0D025 p-Cresol (1) 200.0D026 Cresol (1) 200.0D016 2,4-D 10.0D027 1,4-Dichlorobenzene 7.5D028 1,2-Dichloroethane 0.5D029 1,1-Dichloroethylene 0.7D030 2,4-Dinitrotoluene 0.13D012 Endrin 0.02D031 Heptachlor (and its epoxide) 0.008D032 Hexachlorobenzene 0.13D033 Hexachlorobutadiene 0.5D034 Hexachloroethane 3.0D008 Lead 5.0D013 Lindane 0.4D009 Mercury 0.2D014 Methoxychlor 10.0D035 Methyl ethyl ketone 200.0D036 Nitrobenzene 2.0D037 Pentachlorophenol 100.0D038 Pyridine 5.0D010 Selenium 1.0D011 Silver 5.0D039 Tetrachloroethylene 0.7D015 Toxaphene 0.5D040 Trichloroethylene 0.5D041 2,4,5-Trichlorophenol 400.0D042 2,4,6-Trichlorophenol 2.0D017 2,4,5-TP (Silvex) 1.0D043 Vinyl chloride 0.2

Notes:(1)If o-, m-, and p- Cresol concentrations cannot be differentiated, the total cresol (DO26) concentration is used. The regulatorylevel of total cresol is 200 mg/L.Source: 40 CFR 261.24 and WHWRR, Chapter 2, Section 3 (e)(ii).

PWT STANDARD OPERATING PROCEDUREPERSONNEL AND EQUIPMENT DECONTAMINATION Procedure No. PWT-ENSE-424



TABLE OF CONTENTS

Section ............................................................................................................................ Page No.

TABLE OF CONTENTS ............................................................................................................................. i


2.0 PERSONNEL QUALIFICATIONS ................................................................................................. 1


4.0 PROCEDURES................................................................................................................................. 2

4.1 Decontamination ........................................................................................................................... 2

4.1.1 Location of Decontamination Activities ............................................................................... 2

4.1.2 Personnel Decontamination .................................................................................................. 2

4.1.3 Small Sampling Equipment Decontamination ...................................................................... 3

4.1.4 Decontamination of Submersible Pumps .............................................................................. 3

4.1.5 Heavy Equipment Decontamination ..................................................................................... 4

4.1.6 Decontamination Sediment and Fluids ................................................................................. 4

4.2 EQUIPMENT RINSATE SAMPLING ........................................................................................ 4

5.0 DECONTAMINATION DOCUMENTATION ............................................................................... 5

REVISION LOG





ANNUAL REVIEW LOG




ii

PERSONNEL AND EQUIPMENT DECONTAMIANTIONProcedure No. PWT-ENSE-424



This Standard Operating Procedure (SOP) provides technical guidance and methods that will be used toconduct decontamination of personnel and investigation equipment during environmental investigations.This SOP serves as a supplement to the site-specific Quality Assurance Project Plan (QAPP) and otherapproved project planning documents and may be used in conjunction with other SOPs.

2.0 REQUIREMENTS

The following sections identify the requirements for Quality Assurance / Quality Control (QA/QC),health and safety, and personnel qualifications for personnel and equipment decontamination.


Follow all QA/QC requirements identified for the project as identified in the QAPP and other approvedproject planning document(s).




Personnel overseeing and performing decontamination activities will have knowledge and experience inthe equipment and methods proposed, or will work under the direct field supervision of knowledgeableand experienced personnel. Personnel performing decontamination activities are required to havecompleted the initial 40-hour OSHA classroom training that meets the Department of Labor requirements29 CFR 1910.120(e)(3)(i), and must maintain a current training status by completing the appropriate annual8-hour OSHA refresher courses. Personnel must also have read and signed the appropriate HASP(s). Priorto engaging in decontamination activities, personnel must have a complete understanding of the proceduresdescribed within this SOP and, if necessary, will be given specific training regarding these procedures byother personnel experienced in the methods described within this SOP.

Only qualified personnel will be allowed to perform these procedures. Required qualifications varydepending on the activity to be performed. If work is being performed by a subcontractor, thesubcontractor's project manager will document personnel qualifications related to this procedure in thesubcontractor's project QA files.


The following materials and equipment may be needed for personnel and equipment decontamination:

Monitoring equipment and personal protective equipment (PPE) as outlined in the HASP.

Decontamination equipment and supplies (e.g., wash/rinse tubs, nitrile disposable gloves,brushes, Alconox, plastic sheeting, paper towels, sponges, baby wipes, garden-type watersprayers, large plastic bags, potable water, distilled water and/or deionized water

High pressure washer/steamer

Four-foot long capped PVC casing for decontamination of submersible pumps

PERSONNEL AND EQUIPMENT DECONTAMINATIONProcedure No. PWT-ENSE-424


Drums or other approved water-tight containers for containing decontamination sediment andfluids

Materials necessary to construct an investigation site-specific decontamination facility, if required(e.g., heavy plastic sheeting, berming materials, sump pump, water tanks, roll-off bins)

4.0 PROCEDURES

This procedure describes the method for physically removing contaminants. It applies to chemical andradioactive decontamination of personnel and equipment used in field investigations. All equipment mustbe decontaminated before use at the project site, prior to sample collection, and before being removedfrom the project site. Decontamination of personnel, sampling equipment (e.g., soil sampling equipmentand submersible pumps) and heavy equipment (e.g., hollow stem auger rigs, backhoes) is required toensure the health and safety of personnel, reduce the potential for sample cross-contamination, and reducethe potential for contamination to enter or leave the project site on personnel or equipment.

4.1 Decontamination

4.1.1 Location of Decontamination Activities

Decontamination activities may take place either in the exclusion zone of the investigation site or at adecontamination facility designed to contain larger volumes of potentially contaminated fluids andmaterials, or at a combination of the two. Decontamination activities conducted in the exclusion zonewill be limited to washing of personnel and small sampling equipment using wash tubs or wipes.Scraping of PPE and large equipment to remove adhered clumps of soil will also be performed in theexclusion zone.

Decontamination of heavy equipment or equipment requiring high-pressure washing will be performed ata decontamination facility designed to contain large volumes of washing fluids. The decontaminationfacility may consist of an investigation area-specific temporary facility constructed near the investigationsite, or a decontamination facility central to the project site that may be used for multiple investigations.If a central decontamination facility is used, sufficient decontamination of equipment will be performed inthe exclusion zone prior to moving to the central facility to reduce the potential for deposition ofcontaminated materials on roadways between the investigation area and decontamination facility.

Decontamination facilities will be constructed to limit the potential for contact of potentiallycontaminated materials (decontamination sediment and fluids) with environmental media (i.e., soil orwater) in the decontamination area. This will be accomplished by performing decontamination activitiesin lined and bermed areas, and by containing decontamination sediment and fluids as they are generated.

4.1.2 Personnel Decontamination

The following steps will be used to perform personnel decontamination:

Soil adhering to boots, apparel and equipment will be scraped off at the sampling or excavationsite.

Boots and outer apparel that will not be damaged by water will be washed with Alconox low-sudsing detergent and potable water and scrubbed with a bristle brush or similar utensil (ifpossible). Apparel will be rinsed with potable water.

Coveralls removed (if used).

Hard hat and other safety equipment removed and washed with Alconox and rinsed with potablewater.



Gloves and respirator (if used) removed.

Personnel shall wash hands, face, and forearms before eating/drinking.

Following decontamination, apparel will be placed in a clean area, on clean plastic sheeting toprevent contact with contaminated soil. If the apparel is not used immediately, the equipmentwill be stored in plastic sheeting or heavy duty trash bags.

Disposable PPE will be handled in accordance with Section 4.1.1 of the PWT InvestigationDerived Waste Management SOP.

4.1.3 Small Sampling Equipment Decontamination

Small sampling equipment consists of split spoons, sample bowls, scoops, hand augers, filtering devices,non-dedicated pumps, water level meters, and other such small equipment used in the exclusion zone orthe immediate vicinity of the sample collection location. Small sampling equipment is designed to bedecontaminated at the sampling location using small wash tubs. Decontamination of small samplingequipment does not require high-pressure washing or steam cleaning, or result in production of largevolumes of decontamination sediment or fluids.

The following steps will be used to decontaminate small sampling equipment:

To reduce personal exposure, personnel will dress in suitable PPE in accordance with the HASP.

Soil adhering to equipment will be scraped off at the sampling site and containerized.

Equipment that will not be damaged by water will be placed in a wash tub containing Alconox orequivalent detergent and potable water and scrubbed with a brush. Equipment will then be rinsedinitially with potable tap water and then with distilled water.

Equipment that cannot be submerged in water (e.g., air monitoring devices, electronic devices)will be carefully wiped clean using a sponge and detergent water or baby wipes.

Wash and potable rinse water should be replaced frequently. Decontamination sediment andwater will be handled as investigation derived waste (IDW) (see Section 4.1.6).

Disposable sampling equipment will be handled in accordance with PWT’s Investigation DerivedWaste Management SOP.

Following decontamination, equipment will be placed in a clean area or on clean plastic sheeting. If theequipment is not used immediately, the equipment will be covered or wrapped in plastic sheeting or trashbags.

4.1.4 Decontamination of Submersible Pumps

Submersible pumps used to conduct groundwater sampling will be decontaminated before being placed inthe well. A decontaminated four-foot length of polyvinyl chloride (PVC) capped on one end will beutilized for this procedure. The following steps will be used to decontaminate submersible pumps:


Scrub the outside of the pump with a solution of Alconox or equivalent detergent and potablewater and then rinse with potable water and distilled water.

Fill the PVC tube with Alconox/potable water solution.



Pump the solution through the submersible pump by lowering the intake tube of the pump to thebottom of the PVC tube. Be careful not to uncover the intake of the pump to prevent damage tothe pump.

Rinse the inside of the PVC tube with potable water to remove detergent and then fill the PVCtube with potable water.

Pump the potable water through the pump. 5 to 10 gallons of potable water should be used, at aminimum.

Repeat the rinse procedure with distilled water. 3 to 5 gallons of distilled or deionized watershould be used, at a minimum.

Decontamination sediment and water will be handled as IDW (see Section 4.1.6 below).

Following decontamination, the pump will be wrapped in plastic sheeting or trash bags and placed in aclean area.

4.1.5 Heavy Equipment Decontamination

Heavy equipment used within the exclusion zone and/or for intrusive activities (e.g., drill rigs andassociated heavy drilling and sampling equipment, backhoes, sampling-related vehicles) will bedecontaminated upon arrival at the project site, between investigation locations (i.e., between boreholesand test pits), and prior to leaving the project site. The following steps will be used to decontaminateheavy equipment:


Prior to use at the project site and between investigation locations (i.e., between boreholes, testpits), the portion of the equipment directly exposed to potential contamination (e.g., augers, drillrods, backhoe bucket) will be decontaminated by pressure washing the equipment at thedecontamination facility.

Drill rigs and vehicles will not require pressure washing between investigation locations unlessthey have become substantially dirty as a result of drilling or investigation activities.

Prior to leaving the project site, all portions of the heavy equipment potentially exposed tocontamination will be pressure washed using potable water at the decontamination facility.Special attention will be given to removing any soil or other site-related foreign materials on theequipment.

Decontamination sediment and water will be handled as IDW as described in Section 4.1.6below.

4.1.6 Decontamination Sediment and Fluids

Sediment and fluids from decontamination activities will be initially contained and stored in approvedwater-tight containers at the sampling site or decontamination facility. Each container will be labeled withits contents and the date using a paint pen, or permanent marker. As soon as practical, decontaminationsediment and fluids will be transferred from the sampling site to a designated IDW management area.Handling of IDW is addressed by PWT’s Investigation Derived Waste Management SOP.

4.2 Equipment Rinsate Sampling

Equipment rinsate blank samples may be collected to verify the effectiveness of the decontaminationprocedures. Equipment rinsate blank sampling is usually performed for small sampling equipment, ratherthan heavy equipment. The frequency of rinsate blank sample collection, as well as the analysis methods,



will be specified in the site-specific QAPP. In general, the rinsate blank sample collection procedure willconsist of rinsing decontaminated equipment with laboratory-grade deionized water and collecting therinsate water in sample bottles provided by the analytical laboratory. Special attention will be given torinsing the portions of the equipment exposed to environmental samples or potential contamination.Rinsate samples will be handled in the same manner as environmental and other QA/QC samples inaccordance with PWT’s Sample Handling SOP. Rinsate sample collection will be documented in thesame manner as environmental and other QA/QC samples.

5.0 DECONTAMINATION DOCUMENTATION

Field personnel will be responsible for documenting proper sampling equipment and heavy equipmentdecontamination. The purpose of documentation is to demonstrate in the written field record thatdecontamination was performed in accordance with this SOP. Decontamination activities will bedocumented at least each day they are performed. The documentation will be recorded in a logbook or onappropriate project forms (i.e., boring log, sample field data sheets). The information recordedconcerning decontamination will include:

Date and times of decontamination Location of decontamination activities (i.e., sample site, central decontamination facility) Decontamination personnel and materials Decontamination steps/observations Other applicable information


Indoor and Attic Dust SamplingProcedure No. PWT-ENSE-430


APPROVED: /s Page i of 12PWT Program Manager, Date

TABLE OF CONTENTS

TABLE OF CONTENTS ............................................................................................................................. i

List of Attachments.......................................................................................................................................ii


2.0 REQUIREMENTS............................................................................................................................ 1

2.1 Key Words .................................................................................................................................... 1

2.2 Quality Assurance / Quality Control (QA/QC)............................................................................. 1

2.3 Health and Safety.......................................................................................................................... 1

2.4 Personnel Qualifications ............................................................................................................... 1

2.5 Definition ...................................................................................................................................... 1

2.6 Guidance Documents and Reference SOPs .................................................................................. 1


4.0 PRIOR TO SAMPLING ................................................................................................................... 3

4.1 Indoor Dust Sampling Methodology............................................................................................. 3

4.2 Equipment Calibration .................................................................................................................. 4

4.3 Leak Check ................................................................................................................................... 4

4.4 Pre-Sampling Questionnaire and Pre-Test Survey........................................................................ 4

4.5 Selection of Indoor Dust Sampling Locations .............................................................................. 5

5.0 DOCUMENTATION ....................................................................................................................... 5

5.1 Sample Forms ............................................................................................................................... 5

5.1 Sample Identification .................................................................................................................... 5

6.0 FLOOR DUST SAMPLING PROCEDURE.................................................................................... 6

6.1 Preparing the Sampling Area ........................................................................................................ 6

6.2 Adjusting the HVS3 Nozzle Suction and Flowrate....................................................................... 7

6.3 Operating the HVS3 Unit.............................................................................................................. 7

6.4 Cleaning the HVS3 Unit ............................................................................................................... 8

7.0 ATTIC DUST SAMPLING.............................................................................................................. 9

8.0 SAMPLE HANDLING..................................................................................................................... 9

9.0 EQUIPMENT BLANKS................................................................................................................... 9

10.0 SIDE BY SIDE REPLICATES......................................................................................................... 9




APPROVED: /s Page ii of 12PWT Program Manager, Date

11.0 REFERENCES ............................................................................................................................... 10

List of Attachments

Attachment A Indoor Dust Sampling Field Forms




APPROVED: /s Page iii of 12PWT Program Manager, Date

REVISION LOG



ANNUAL REVIEW LOG


0 Annual QA Review October 2016




APPROVED: /s Page 1 of 12PWT Program Manager, Date


This Standard Operating Procedure (SOP) provides technical guidance and methods that will be used forcollection of indoor dust samples for chemical analysis during environmental investigations. Thisprocedure applies to collection of dust from a variety of indoor living space and attic surfaces, includinglevel loop and plush pile carpets and bare floors (wood, tile, or other). Attic sample collection proceduresvary slightly from collection of other indoor dust samples, and are discussed separately. This SOP servesas a supplement to site-specific Health and Safety plans and the project-specific Quality Assurance ProjectPlan (QAPP).

This SOP is intended to be used in conjunction with other SOPs produced by Pacific WesternTechnologies, Ltd. (PWT) for environmental support operations on contracts for the United StatesEnvironmental Protection Agency (USEPA).

2.0 REQUIREMENTS

The following sections identify the requirements for collection of indoor dust samples.

2.1 Key Words

Indoor Dust; Attic Dust; Dust Sampling; Residential Sampling.


Follow all QA/QC requirements as identified in the approved project planning document(s) such as theproject-specific QAPP and this SOP. Guidance documents referenced during SOP development areidentified in Section 2.6.




Personnel planning to perform indoor or attic dust sampling activities will have knowledge andexperience in the required equipment and methods, or will work under the direct supervision ofknowledgeable and experienced personnel.

2.5 Definition

The dust sampling approach described in this SOP uses a High Volume Small Surface Sampler (HVS3).This specialized vacuum is designed to collect dust samples for chemical analysis, and is shown in Figure1. Attic sampling will be completed using a specialized attic sampling attachment for the HVS3.

2.6 Guidance Documents and Reference SOPs

The following PWT SOPs should be used in conjunction with this Indoor and Attic Dust Samplingprocedure:

PWT-ENSE-402 Spatial Data Submittals PWT-ENSE-406 Sample Handling PWT-ENSE-423 Investigation Derived Waste Management





PWT-ENSE-424 Personnel and Equipment Decontamination

In addition to the listed SOPs, this indoor dust sampling procedure is consistent with USEPA’s Guidancefor the Sampling and Analysis of Lead in Indoor Residential Dust for Use in the IEUBK Model (USEPA,2008). The following supplemental information was also considered in development of PWT-ENSE-430,Indoor and Attic Dust Sampling.

ASTM D5438-11: Standard Practice for Collection of Floor Dust for Chemical Analysis CS3-Inc.: High Volume Small Surface Sampler (HVS3) Operation Manual.


This procedure is intended for use with the CS3 HVS3 unit. A schematic of the HVS3 is shown in Figure1. The equipment consists of the following components:

Nozzle – The edges and corners of the sampling nozzle are rounded and smooth. This preventsthe nozzle from snagging on any carpeted material which may be encountered. Nozzleconstruction allows for sufficient suction to separate loose particles from the bare floor orcarpeted surface and carry them to the cyclone. The nozzle is 12.5 centimeters (cm) long, and 1cm wide, with a 13-millimeter (mm) flange which tapers to the nozzle tubing at an angle equal toor less than 30 degrees. This configuration allows the nozzle to perform with the appropriatevelocities when operated correctly.

Cyclone – The cyclone is constructed such that the air flow allows for separation of particles of 5-microns in diameter (or larger). The cyclone shall be made of aluminum or stainless steel. Aspare cyclone should be kept on hand if possible.

Catch Bottle – The catch bottle will be purchased from an appropriate environmental supplycompany, and shall meet the requirements of the analytical laboratory. Catch bottles must betransparent so that the operator can see the sample as it is collected. Bottles should be 250-mLlow-density polyethylene (LDPE) or fluorinated ethylene propylene.

Flow Control System – The flow control system allows for substantial volume adjustment. Thesuction source is capable of drawing 12 liters per second (L/s) through the system with norestrictions other than the connected nozzle, cyclone, and flow control system. A commercialvacuum cleaner may be modified for this purpose by the HVS3 manufacturer.

Gaskets – Gaskets in joints will be made of an inert material appropriate to avoid samplecontamination, and to prevent air leakage.

Flow Measuring and Suction Gages – Magnehelic gages are used to measure the pressure drop atthe nozzle and for control of the flow rate for the entire system.

Other equipment and materials necessary to perform the work described in the SOP include:

Digital scale accurate to 0.1 grams, for weighing samples Stopwatch Two measuring tapes for sampling area layout, OR pre-cut, plastic templates for delineating

sampling areas. Template size may vary, but a 2-foot by 2-foot or 3-foot by 3-foot template isrecommended

Masking tape (painter type masking tape is suggested, to allow for easy and damage freeremoval)





Marking pens Nitrile gloves Safety glasses Manila envelope or file folder for leak check Thermometer Relative humidity meter Inclined manometer for instrument calibration Alconox (or equivalent) and brush for decontamination Squeeze bottle containing deionized water Squeeze bottle containing soap solution (Alconox or equivalent) Squeeze bottle containing reagent grade methanol Fine silica for blanks Kim-wipes Hand tools (screw driver, wrenches, etc) Extra sample catch bottles and caps Zip-top plastic bags Stainless steel tray or clean sheets of paper/foil Digital camera Sample labels Appropriate field forms and SOPs

Additional equipment for attic sampling includes:

HVS3 Microvac Attic Sampling attachment Tyvek protective suit

4.0 PRIOR TO SAMPLING

4.1 Indoor Dust Sampling Methodology

This SOP describes the use of the HVS3 to collect indoor dust samples for chemical analysis. Surfacedust particles are collected from the carpet or the bare floor by means of vacuum-induced suction.Particles enter the HVS3 through the sampling nozzle. The recommended pressure and flow rate aredependent on the type of surface being sampled, but must be sufficient to generate the velocity required toliberate the dust particles from carpeted and bare floor surfaces into the sampler air stream. The nozzle isdesigned to move across the floor with minimal resistance while still maintaining a seal to collect thesample.

Dust flows into the cyclone, which collects most particles larger than 5 microns in diameter. Samplecollection utilizes centrifugal force. Larger (heavier) particles move to the outside wall of the cycloneand then slide down into the catch bottle (sample container) threaded onto the bottom of the cyclone. Thesample container may then be capped and labeled for sample storage and shipment. Refer to PWT-ENSE-406, Sample Handling for details on sample labeling, storage, and shipment. Smaller particlesremain in the air stream and flow out the exhaust tube. The cyclone collects an average of 99 percent ofthe surface dust picked up by the nozzle. Any dust that is not captured in the sample container movesthrough the fan and is retained in the vacuum cleaner bag. This material will not be sent for chemicalanalysis.





4.2 Equipment Calibration

The HVS3 sampling process does not require any internal calibrated flow devices. The cyclone isdesigned to create separation of particles at various flow rates throughout the range of operationalflowrates the system can produce. As a result, there is not a requirement to regularly calibrate the HVS3.Pressure gages (Magnehelic gages) should be calibrated against a primary standard at the start of each daythey will be used for sampling. Adjust the flow rate and the nozzle pressure drop to values thatapproximate those given in Section 6.2 of this SOP.

Pressure gages shall be calibrated against an inclined manometer or other primary standard. One meansof checking a Magnehelic gage is to set a flow rate through the sampling system with a manometer, thenswitch to the Magnehelic gage. This process should be repeated at two different flow rates. If thedifference in the readings is more than 3%, the gage is leaking, or is in need of repair or recalibration.The gage should be tagged “DO NOT USE” and taken out of service. Results of calibration should berecorded in the field logbook.

4.3 Leak Check

Prior to using the HVS3 to collect samples, a leak check shall be performed to verify that the equipmenthas been assembled correctly. The leak check shall be completed as follows:

Place a thick manila envelope or a file folder underneath the nozzle to seal off the opening. Turn on the HVS3. The flow Magnehelic gage should read 0-0.02 inches of water to ensure the

system is not leaking. If leakage is suspected, and the gage reads more than 0.02 inches of water, check all gaskets and

check tightness of clamps, catch bottle, and material covering the nozzle opening. Once all connections have been verified, recheck the flow to the Magnehelic gage to make sure it

reads less than 0-0.02 inches of water before beginning sampling. If the HVS3 is unable to pass the leak check after connections have been verified, tag the

equipment “DO NOT USE” and contact the project manager for instructions.

4.4 Pre-Sampling Questionnaire and Pre-Test Survey

Owners and/or occupants as appropriate (hereafter referred to as “residents”) of properties identified forindoor dust sampling will be contacted in advance to schedule a time for indoor sampling to occur. At thetime that the sampling is scheduled, residents will be asked to maintain normal cleaning routines prior tosampling.

Upon arrival at the home for indoor sampling, a member of the field team will discuss the work to becompleted with the residents. Through this discussion, the field sampler will identify appropriatesampling locations within the home, based on the information provided about how the space is used. Thesampler will confirm the most frequently occupied areas of the home, the most frequently used doors tothe outside, and whether any children sleep in the home (children’s bedrooms will be sampled ifavailable).

In order to better understand variables which are known to impact indoor dust, an Indoor Dustquestionnaire (see Attachment 1) will be completed as part of dust sampling activities. One of thesamplers will complete the questionnaire with the resident head-of-household if available, or with anotherresident of the house if necessary. Completion of the questionnaire is required prior to selection ofsampling areas within the home. Some of the factors known to impact indoor dust include pets,





occupation, smoking habits, age of residence, primary heating source, floor surface (carpet vs hardsurfaces), cleaning equipment, cleaning habits, and resident hobbies.

4.5 Selection of Indoor Dust Sampling Locations

Sample collection locations are specified in the QAPP to include the main entryway (most frequentlyused entryway), the floor area of the most frequently occupied room (usually the kitchen or living room),and the floor of a child’s bedroom (or any bedroom if there is not a child living in the home). Aminimum of 3 and a maximum of 5 samples will be collected in each home.

The total floor area vacuumed to obtain dust for each sample will depend on the amount of dust present.The floor area sampled will be measured and recorded on the sampling form to allow calculation of themetals loading rate for each sample from the resulting analytical data. Sampling efforts at a location willcontinue until a minimum of 20 grams of sample is collected, or at least enough dust to completely coverthe sample container. If the initially defined sampling area (or the template, if one is used) do not provideenough sample material, a second area immediately adjacent to the first should be defined, and sampled.The sampling form should indicate the total area sampled (the initial area which yielded an insufficientsample + the additional area, typically equal to the initial area times 2). If not enough dust is present inthe individual room samples, samples from multiple living areas in the home may be composited.However, attic samples (see below) will not be composited with discrete or composite samples fromliving areas under any circumstances.

Attic dust sampling will be conducted only at those residences where the attic can be routinely accessed(e.g., by stairway, ladder/trap door, etc.) and is used by the resident for storage. One composite sample ofattic dust will be collected in each home where the attic is accessible and used.

5.0 DOCUMENTATION

All forms required are provided as attachments to this SOP. Other documentation, such as information tobe recorded in field log books, is described in this section of the SOP.

5.1 Sample Forms

The pre-sampling questionnaire must be completed prior to selection of sampling locations. Thequestionnaire may have some lines completed prior to samplers arriving at the house, if the informationwas obtained from the homeowner or resident over the telephone while scheduling sampling. Thisinformation should be verified on the day of sampling.

In addition to the Pre-Sampling Questionnaire, samplers will start an Indoor Dust Sample InformationForm immediately prior to sampling. This form will be completed during sampling for each areasampled.

For all field documentation: All lines on the forms must be filled in. In cases where a given item may notapply, mark that space “N/A”. Forms should be completed in accordance with PWT-ENSE-406.

5.1 Sample Identification

The sample identification scheme for indoor dust samples is presented in the project- specific QAPP, anda typical example is summarized here for sampler convenience.





The first part of the sample name is a letter designating the matrix sampled, D for indoor dust, followedby a unique four digit parcel code assigned by the PWT Team. The second part of the sample nameidentifies the feature sampled at the property. The final part of the sample name is a letter to designateother sample information, such as QC sample type.

For example, the sample name D1402-E-DUP refers to a dust sample collected from the main entryway atproperty 1402. The sample is a duplicate/replicate sample, as indicated by the trailing letters “DUP”.

The features which might be sampled and the associated feature codes assigned are as follows:

For Dust:

E = main entryway

K = kitchen

L = living room

B = bedroom, if more than one bedroom is sampled, expand to B1, B2, etc.

C = residence living area composite sample (in case sufficient material could not beobtained for discrete samples)

A = attic

A unique CLP number will be assigned to each sample in addition to its sample identification asdescribed above. Both identifications will be recorded on the sample label and the chain-of-custody.

6.0 FLOOR DUST SAMPLING PROCEDURE

Indoor Dust Sampling activities shall be conducted as follows.

6.1 Preparing the Sampling Area

The areas to be sampled will have been determined during completion of the Pre-Sampling Questionnaire.First, mark off the area to be sampled. This may be done by one of two methods. Regardless of whichmethod is used, the sampled area should be at least 3 feet from any outside door, and the dimensions ofthe area will be recorded on the field form. When laying out the sampling area, it is important to leaveenough space around the perimeter of the sampling area to allow for samplers to move and for operationof the HVS3 to the full extent of the sampled area.

A pre-made sampling template may be used or the area may be measured and taped with masking tape. Ifa pre-made sampling template is to be used, wipe the template with a clean laboratory tissue and place thetemplate on the floor in the area to be sampled. Use masking tape to temporarily hold the template stillduring sampling.

To sample from a measured area, instead of a pre-made template, the procedure is as follows. Place twomeasuring tapes on the floor parallel to each other on either side of the main traffic path through the area.The tapes should be approximately 2 feet to 5 feet apart and be extended as far as the space will permit.Masking tape will be placed along the tape measures for a distance of approximately 3.5 feet for carpet orrugs, and as large as possible for bare floors, (this distance may be increased (space permitting) ifsufficient sample volume cannot be collected in the initial area).





If a pre-made sampling template is used, distance marks will already be available. If a template is notused, begin at the same end of each piece of masking tape, and use a permanent marker to make a smallmark every 3 inches and a larger mark every 12 inches along the tape. Individual sampling strips aredetermined by the size of the HVS3 nozzle, and are approximately 3 inches wide.

6.2 Adjusting the HVS3 Nozzle Suction and Flow Rate

Clean the wheels and nozzle tip of the HVS3 with a clean laboratory tissue before sampling. Place theHVS3 sampler in the lower left corner of the sampling area. Adjust the flow rate and pressure at thenozzle according to the surface to be sampled.

The pressure at the nozzle is a function of the flow rate and the distance between the surface and thenozzle. The nozzle position is regulated by the height control knob on the back of the HVS3 and thenozzle level adjustment knob on the front side of the nozzle. A butterfly valve located on the control tubedownstream of the cyclone regulates the flow rate, which is measured by the pressure across the cyclone.Higher flow rates produce higher pressures. The nozzle position adjustment allows for the completesystem to be regulated.

To use the HVS3 on hard surfaces or level loop carpet (typical commercial type carpeting), adjust theheight of the nozzle until the bubble level is centered. If the HVS3 is close to the position required, butthe bubble is not quite centered, use the nozzle level adjustment knob to fine tune the adjustment. Then,set the flow rate with the butterfly valve. To check the flow rate, tip the HVS3 unit forward and check theflow on the Magnehelic gage. The flow should read at least 5 cubic feet per minute (cfm).

Next, read the pressure across the nozzle. The pressure should be approximately 9 inches of water. If thepressure reading is not 9 inches, recheck the flow and/or check that the nozzle is still level and makeadjustments accordingly.

To use the HVS3 unit on plush or shag carpet, read the pressure across the nozzle and set the pressure toapproximately 9.5 inches on the nozzle gage. The pressure can be set by using the height adjustmentknob and the level knob to keep the nozzle level. Next, set the flow rate with the butterfly valve forapproximately 20 cfm, 8 inches of water. Then re-check the pressure across the nozzle. The pressure haslikely increased due to the increased flow rate. Reset the pressure to 9.5 inches of water using the heightadjustment knob. Then recheck the flow rate and reset it to 20 cfm, 8 inches of water. It may takemultiple small adjustments to achieve the targeted flow rate of 20 cfm, 8 inches of water, and nozzlepressure of 9.5 to 10 inches of water.

Once the pressure and flow rate have been properly adjusted and verified, attach the sample container tothe HVS3.

The manometer fluid should be replaced at least annually per manufacturer instructions.

6.3 Operating the HVS3 Unit

The HVS3 unit functions best when the handle is locked in the fixed position at a 45 degree angle. Thisis done using the level at the bottom of the handle. This will allow the HVS3 unit to move forward andbackward in a smooth motion.

Starting at the bottom left corner of the sampling area, collect the sample by moving the nozzle forward ina straight line from one end of the sample area to the other at a speed of about 2 feet per second. Whenthe first pass is complete, the unit is pulled directly backwards over the same strip of floor. This is





repeated 4 times for each strip of the sampling area. For the next strip, the nozzle is angled slightly to theright to the adjacent section of floor and the HVS3 is moved forward and backward 4 times. This isrepeated until all strips have been sampled, or there is enough sample in the catch bottle (samplecontainer).

After sampling the floor area within the pre-made template or the pre-measured floor area, check theamount of dust in the catch bottle. At a minimum, there must be enough dust to completely cover thebottom of the sample container. If possible, 20 grams of dust should be collected. This quantity of dust isneeded to allow for loss during sieving at the laboratory and to provide sufficient volume for laboratoryduplicate, QA/QC, or re-analysis. Hair, carpet fibers, and other large objects should be excluded fromconsideration when visually evaluating how much dust has been collected.

If the sample volume is insufficient, sampling personnel will designate/mark another sample locationimmediately adjacent (if possible). If an adjacent area is not available to be sampled, then a similar hightraffic area, frequent occupancy room, or bedroom should be selected to provide the additional samplevolume.

The additional material will be collected using the same method, as described above. When a sufficientamount of dust has been collected, turn off the HVS3 unit. Remove the sample container and attach thescrew on lid. Record the total dimensions of the sampled area on the Sample Information form.Weighing the dust sample will follow the procedure described in Section 10.

6.4 Cleaning the HVS3 Unit

The HVS3 unit will be decontaminated after collection of all dust samples at a residence (including bothLiving Space samples and the Attic sample). If the attic will not be sampled, follow this decontaminationprocedure after completion of indoor dust sampling at a residence and before beginning sampling at thenext residence.

Rubber/nitrile gloves and safety glasses shall be worn while cleaning the HVS3 unit. With the samplecontainer removed and safely stored, open the flow control valve to maximum flow, tip the sampler backso the nozzle is approximately 2 inches off the floor, and switch the vacuum on. Place a hand covered bya clean rubber glove on the bottom of the cyclone and alternate closing and opening the cyclone for 10seconds to free any loose material adhering to the walls of the cyclone and tubing.

Remove the HVS3 unit to a well ventilated area free of dust (e.g. field truck or van, field office) for wetcleaning. Remove the cyclone and elbow at the top of the nozzle tubing from the sampling unit. Holdeach section of the HVS3 over the methanol waste container and rinse with reagent grade methanol usinga squeeze bottle. After rinsing, use Kim-wipes wetted with methanol and a brush to clean each section ofthe sampler. Then use Kim-wipes wetted with methanol to clean the gaskets and connections betweeneach section of the tube. Use Kim-wipes wetted with methanol to clean the previously used cleaningbrush.

Allow all equipment to air dry. The equipment must be completely dry before sampling again. The cleansections of the HVS3 unit can be placed in or on a clean container to air dry. Once the inside of theindividual sections are dry, re-assemble the HVS3 unit. Conduct a leak test at the next sample location toensure all clamps and gaskets have been assembled correctly.

An equipment blank will be collected every 20 decontaminations. Equipment blank sample collectionwill follow the procedure described in Section 9.





7.0 ATTIC DUST SAMPLING

Attic Dust Sampling activities shall be conducted in generally the same manner as living space dustsamples. Never composite Attic dust with Living Space dust.

Attic dust will only be sampled in homes where the attic is used for storage and can be routinely accessed(by stairs, ladder/trapdoor, etc). If vermiculite or asbestos is identified in the attic, no sampling work willbe conducted. Dust will be collected directly from exposed horizontal surfaces in the attic, such as raftertops or flooring. The dust will be collected from an area of the attic not likely to have been disturbed overtime (if possible). Attach the attic dust sampling attachment to the HVS3 unit. Complete a leak test atthe nozzle, as described in Section 4.3. After a satisfactory leak check, attach a clean sample container.

The attic dust sampling procedure is as follows:

Sampled areas in the attic will be measured and areas will be calculated and recorded on the SampleInformation Form. It is anticipated that space in attics will be limited, and it may be difficult to identify asuitable area for sampling. When space allows, areas to be sampled should be pre-measured anddelineated with masking tape prior to sampling. Pre-made templates may be sized to fit in typical atticspaces and used to delineate sampling areas if space does not typically allow for pre-measuring customsampling areas. It is also acceptable to measure the area after sampling is complete.

Once the space to be sampled has been identified and delineated with masking tape and/or the pre-madeattic sampling template, sampling can proceed in accordance with the floor sampling procedure describedin Section 6. Sampling should continue until adequate sample volume has been obtained, or until thereare no more suitable locations to sample within the attic. Decontamination of the HVS3 and the HVS3attic sampling extension will be completed as described in Section 6.4.

8.0 SAMPLE HANDLING

Samples will be preserved, stored, and handled in accordance with the project specific QAPP and PWT-ENSE-406, Sample Handling.

9.0 EQUIPMENT BLANKS

Equipment blanks or rinse blank samples will be collected after completing decontamination proceduresas described in Section 6.4. For this project, equipment blanks shall be collected at the rate of one blankfor every 10 decontaminations performed. Equipment blanks will be collected by vacuuming fine silicaor powder through the collection device into a sample container. The material will then be submitted tothe laboratory for the same analysis as the investigative samples. Laboratory grade methanol at least99.5% purity will be used for decontamination; no source blank will be required.

10.0 SIDE BY SIDE REPLICATES

Replicate dust samples will be collected at a frequency of one per 20 dust samples collected. Thereplicate sample will be collected using the same procedure used for the investigative sample (asdescribed in Section 6), from a floor area immediately adjacent to the investigative sample. Replicate





samples will have the same identifier as investigative samples, with the addition of a trailing letter “D” toindicate it is a replicate/duplicate sample (as described in Section 4.1).

11.0 REFERENCES

ASTM-D5438-11, 2011. Standard Practice for Collection of Floor Dust for Chemical Analysis.American Society of Testing and Materials (ASTM) International. August.

CS3, Inc., 2001. High Volume Small Surface Sampler (HVS3) Operation Manual. Jack Hirsch.

US Environmental Protection Agency (USEPA), 2008. Guidance for Sampling and Analysis of Lead inIndoor Residential Dust for Use in the Integrated Exposure Uptake Biokenetic Model (IEUBK).Technical Review Workgroup for Metals and Asbestos, Lead Committee. OSWER 9285.7-81.December.

PWT STANDARD OPERATING

Indoor and Attic Dust Sampling

APPROVED:PWT Program Manager,

Figure 1 – High Volume Small Surface Sampler (HVS3) Schematic

* Refer to parts description Table on following page for identification of parts A through N


Procedure No.

Date effective: 9/15/s

Manager, Date

High Volume Small Surface Sampler (HVS3) Schematic

following page for identification of parts A through N

Procedure No. PWT-ENSE-430Revision 0

Date effective: 9/15/2015Page 11 of 12





HVS3 Parts Description Table

Part # Qty. Description

A 1 Model 1020D Vacuum Platform

B 1 Mounting Plate with Magnehelic mount

C 2 Magnehelic gages, 0-15" & 0-10"

D 1 Control valve tube

E 1 U-Tube

F 1 3"diameter Aluminum Cyclone

G 1 P.E. or (F.E.P.) Catch Bottle

H 1 Cyclone Inlet Elbow

I 1 Tygon or (F.E.P) Flex Joint

J 2 2" clamps with gaskets

K 2 11/2” clamps with gaskets

L 1 Suction Nozzle with level

M 1 Vacuum Filter Bag

N 1 3" clamp with gasket

ATTACHMENT A

Field Forms

Page 1 of 3

Indoor Dust Sampling Field Forms

Resident Questionnaire

Samplers: Date:

Property Code PC-

Property Address

Most frequently used entry Front Door Back Door Side Door Other:__________

Most frequently occupied room Living Room Kitchen Other:_______________

Attic access method No Access Stairs trapdoor w/ ladder trapdoor w/out ladder

Attic access frequency 1 time/wk 1 time/month 1-2 times/year Less than 1/year

Is the attic used for storage? Yes / No

Is the attic used for livingspace? If Yes, Describe use

Number of occupants (inc ages)

Dwelling type (circle) Single Family MultiFamily Mobile Home Other:__________

Year Built (inc dates for fencesand outbuildings, if known)

Name of Resident Interviewed

Resident Occupation

Own or Rent?

Name of property owner

Construction characteristics Foundation type, etc

Remodel/Renovation history(project/date)

When were interior walls/triplast painted?

Years lived in home

Years owned home

List pets

Where do pets sleep?

Smoking habits

Fireplace/wood stove use

Primary heat source

"Shoes off" policy in the house

Vacuuming habits (typical andmost recent)

Type of vacuum

Aware of attic dust enteringhouse? (if yes, describe)

Aware of holes where attic dustmight enter house? (if yes,describe)

Page 2 of 3


Sample Information

Property ID Number: PC- Date: Start/End Time: /

Project: Colorado Smelter CSSA RI Sampler(s): Company:

Sample ID: Sample Type: Living Space Attic

Sample Location (room orentryway sampled)

Floor Type (carpet, wood, concrete,vinyl, tile, other)

Rug Type (Plush, level loop, flat,multilevel, shag or area rug)

Wall-to-wall carpet orArea Rug

Area Sampled(SqFt)

SampleTime

Weight Before(grams)

Weight After(grams)

Sample Weight(grams)

QA/QC QC(Sample ID or NA)

Vacuum SamplingDuration (sec)






Area Sampled(SqFt)

SampleTime


Weight After(grams)









Area Sampled(SqFt)

SampleTime


Weight After(grams)









Area Sampled(SqFt)

SampleTime


Weight After(grams)




Page 3 of 3


Sampling Equipment Information

Property ID Number: PC- Date:

Sample Equipment: HVS3

Leak Check (Yes/No): 10-second cleaning after sampling (Yes/No):

Nozzle Flow Rate: Nozzle Pressure Drop:

Calibration Verification:

Magnehelic Reading: inches water Manometer Reading: inches water

Sample Equipment: HVS3 Connected to Attic Sampling Extension (NA if Attic not sampled)

Leak Check (Yes/No): 10-second cleaning after sampling (Yes/No):

Nozzle Flow Rate: Nozzle Pressure Drop:

Calibration Verification:

Magnehelic Reading: inches water Manometer Reading: inches water

Analyses: Total Metals by 6020B (ICP-MS) and Mercury by 7470 (CVAA)

Visitors:

Comments/Observations:

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3000 Youngfield Street, Suite 300, Wheat Ridge, CO 80215

July 14, 2014

Subject: Request for InformationColorado Smelter SitePueblo, Colorado

Pacific Western Technologies, Ltd (PWT) is interested in obtaining a quotation from your company for property(including property features) surveying services. The Subcontractor shall provide all labor, material, andequipment/tools needed to complete the

Site HistoryThe Colorado Smelter (also known and the Colorado Smelting Company and the Eiler’s Smelter) was one offive smelters in Pueblo at the turn of the last century. This smelter processed silverPass area and operated from 1883 to 1908. There is one steel mill (Evraz/Rocky Mountain Steel/Colorado Fuel& Iron (CF&I)) located to the south that is still operating and that the state Resource Conservation and RecoveryAct (RCRA) program is involved with.

Surveying Scope of WorkAssume 1200 properties will be inventoried.percent and will neatly depict yard feat

house front yard back yard side yards (as separate features) paved and unpaved driveways drip zones children’s play areas buildings decks

For the following areas, a center point shall

house front yard back yard side yards (as separate features) unpaved driveways drip zones

Drip zone center points shall be established by selecting

Provide calculated area values for each feature that has an established center point.

DeliverableAll point survey data shall be delivered in state pdescription of the points will be added. Survey data report shall also document the type of survey instrumentused, survey tolerance, and evidence of survey controls points used to establmap quality figures showing each property includiestablished center points. Drawing accuracy and neatness are critical, and an example is provided in Figure 1.

www.pwt.com

3000 Youngfield Street, Suite 300, Wheat Ridge, CO 80215 303.274.5400

Request for Information for Surveying ServicesColorado Smelter Site – Operable Unit 1

Pacific Western Technologies, Ltd (PWT) is interested in obtaining a quotation from your company for property(including property features) surveying services. The Subcontractor shall provide all labor, material, andequipment/tools needed to complete the scope of work described below.

The Colorado Smelter (also known and the Colorado Smelting Company and the Eiler’s Smelter) was one offive smelters in Pueblo at the turn of the last century. This smelter processed silver–lead ore from the MoPass area and operated from 1883 to 1908. There is one steel mill (Evraz/Rocky Mountain Steel/Colorado Fuel& Iron (CF&I)) located to the south that is still operating and that the state Resource Conservation and Recovery

ved with.

will be inventoried. Each property will be drawn to scale within an accuracy of 10percent and will neatly depict yard features such as:

(as separate features)

trees tree lines shrubs flower beds gardens play areas driveways sidewalks

shall be established for each feature:

(as separate features)

children’s play areas unpaved alleyways flower beds gardens play areas driveway

Drip zone center points shall be established by selecting one corner of the house.

Provide calculated area values for each feature that has an established center point.

All point survey data shall be delivered in state plane coordinates in a Microsoft Excel table. In addition, adescription of the points will be added. Survey data report shall also document the type of survey instrumentused, survey tolerance, and evidence of survey controls points used to establish accuracy. Provide individual

figures showing each property including all labeled property features, surface area calculationsDrawing accuracy and neatness are critical, and an example is provided in Figure 1.

303.274.5400 FAX 303.274.6160

Pacific Western Technologies, Ltd (PWT) is interested in obtaining a quotation from your company for property(including property features) surveying services. The Subcontractor shall provide all labor, material, and

The Colorado Smelter (also known and the Colorado Smelting Company and the Eiler’s Smelter) was one oflead ore from the Monarch

Pass area and operated from 1883 to 1908. There is one steel mill (Evraz/Rocky Mountain Steel/Colorado Fuel& Iron (CF&I)) located to the south that is still operating and that the state Resource Conservation and Recovery

Each property will be drawn to scale within an accuracy of 10

coordinates in a Microsoft Excel table. In addition, adescription of the points will be added. Survey data report shall also document the type of survey instrument

Provide individualsurface area calculations, and

Drawing accuracy and neatness are critical, and an example is provided in Figure 1.

For this quotation, assume that property utilities will not be included.

General RequirementsAll work shall be conducted in full compliance with all applicable local, state, and federal laws, rules, andregulations, and in accordance with PWT’s Siteprior to the commencement of any work.

The tentative start date of this work is early September 2014before July 25, 2014, and that you have the capacityschedule. Please submit your quotation completed and signed by an authorized representative of your company,via e-mail to me at [email protected] and to Steve Singecomments regarding this request for information

Sincerely,

Travis AustinPacific Western Technologies, Ltd.3000 Youngfield Street, Suite 300Wheat Ridge, CO. 80215Ph: (303) 274-5400 ext.34Fax: (303) 274-6160www.pwt.com

Page 2 of 2

s quotation, assume that property utilities will not be included.

All work shall be conducted in full compliance with all applicable local, state, and federal laws, rules, andregulations, and in accordance with PWT’s Site-Specific Health and Safety Plan. The Plan will be providedprior to the commencement of any work.

early September 2014; therefore, the quotation shall be, and that you have the capacity to complete this work on a minimum 40 property per week

. Please submit your quotation completed and signed by an authorized representative of your company,and to Steve Singer at [email protected]. If you have any questions or

information, please call me at (303) 274-5400 x34.

All work shall be conducted in full compliance with all applicable local, state, and federal laws, rules, andlan. The Plan will be provided

; therefore, the quotation shall be submitted on oron a minimum 40 property per week

. Please submit your quotation completed and signed by an authorized representative of your company,. If you have any questions or